Viva Universal Access Animal Containment Workstation, Model VA2-4A_
Universal Animal Containment Workstation
The Safety Solution for Animal Research Laboratories

Main Features

Provides Class II biological safety cabinet protection. Unique Dynamic Chamber plenum delivers quiet, uniform airflow. Negative pressure plenum surrounds contaminated positive pressure plenum; no fabric bags are used. Long-life ULPA filters for supply and exhaust airflow. (IEST-RP-CC001.3) Sentinel microprocessor, programmable, supervises all cabinet functions. Frameless, shatterproof sash is easier to clean, offers larger, unobstructed viewing area. Ergonomically angled front improves reach and comfort. Angled supply filter matches cabinet profile to achieve best downflow uniformity.
One piece work surface removal simplifies cleaning. Raised airflow grille prevents blockage to airflow; maintains safety. Improved lighting is brighter, more uniform, reduces glare. Optional UV lamp is located away from direct line of sight; lamp operates on programmable timer. Esco antimicrobial surface on all painted surfaces. Activated carbon filter removes odors.
Model VA2 (available in 1.2 and 1.8 meter models / 4ft. and 6ft.) shown with optional infinitely adjustable stand, raised position.

Containment Protection

The Esco Universal Animal Containment Workstation provides Biosafety Cabinet Class II performance to help protect investigators and animal handlers from animal exposure which can create occupational hazards such as asthma and allergies.1 In addition, the Universal Workstation can be used for a variety of general laboratory applications which require clean air and contaimnent. The Workstation protects the user from airborne contaminants during cage changing and other procedures. It protects animals from external and cross contamination, and protects the environment from particulate emissions.
Shown with optional mobile hydraulic height-adjustable support stand fully lowered.
National Institute for Occupational Safety and Health (NIOSH) 1998, Preventing Asthma in Animal Handlers, DHHS (NIOSH) Publication No. 97-116. Visit www.cdc.gov/niosh/animalrt.html.
Animal Containment Workstations Dual Access Animal Containment Workstation
Touchpad data entry buttons permit control settings and access to diagnostics, default settings and hierarchical menus. Color coded indicator lamps display green for primary function (fan operation); blue for secondary function (fluorescent lights and electrical outlet); and orange for caution (UV lamp ON).
Programmable automatic UV light timer simplifies operation, enhances contamination control, extends UL lamp life and saves energy.
A graphical interface indicates cabinet performance. Digital read-out with alpha-numeric display indicates all input, status and alarm functions. All functions can be user activated through touch-pad programming access; see Operations Manual.
Sentinel Microprocessor Control System, Programmable
When programmed ON the start-up sequence confirms status with Air Safe and local time display. the Personal Identification Number (PIN) access restricts unauthorized adjustments. an airflow alarm warns of deviations from normal velocities.
The laminar airflow system creates a recirculating vertical flow of ISO Class 3 clean air across the work surface per ISO14644.1. A large 305 mm (12") sash opening accommodates standard size animal cages, provides ample room for surgical procedures and other animal research protocols. The sliding window opens to 450 mm (17.7") for insertion and removal or larger instrumentation and equipment.
The exhaust ULPA filter removes all particulates acquired from the work surface before the air is exhausted to the room. An activated carbon filter removes odors from the ULPA filtered exhaust air stream before returning air to the laboratory.
Self-regulating airflow system automatically compensates for filter loading to extend filter life. The proprietary Esco motor/blower orientation minimizes noise (less than 65 dBA for VA2-4) and vibration at the work surface. The built-in solid-state variable speed controller is infinitely adjustable from Off to Maximum. A built-in RFI and electrical noise filter eliminates interference with adjacent instrumentation.

Balanced Airflow

Intake and exhaust ratios are factory balanced before shipment to assure proper performance of the resulting air curtain. The cabinet creates an airflow ratio of 60% recirculation to 40% exhaust, similar to a Class II, Type A2 biological safety cabinet. The inflow of room air is captured in the slots peripheral to the work surface opening before it can contaminate the work area. Contaminated room air does not enter the work area.
Integrated Filtration System
A combination of twin ULPA filters, an activated carbon filter and an intake air pre-filter give the Universal Workstation a fully integrated envelope for animal, operator and environmental protection. ULPA filters (per IEST-RP-CC001.3), are tested to a typical efficiency of >99.999% for 0.1 to 0.3 micron particles. An improved mini-pleat separation technique maximizes filter surface area, improves efficiency and extends filter life over conventional separation. A disposable carbon pre-filter removes odors, traps larger particulates before they enter the blower chamber, and protects the supply ULPA filter to extend filter life. The supply ULPA filter provides clean air to the work surface in a gentle vertical laminar flow.
Sentinel Microprocessor Control, Alarm, Monitoring System
The Esco Sentinel microprocessor-based control system supervises operation of all cabinet functions. Control levels are locally configurable to meet user requirements. Continuous monitoring of cabinet airflow is displayed on a bright, easyto-read LCD panel. Integrated, temperature-compensated true airflow velocity sensors provide the highest control accuracy. Additional Sentinel functions are factory set to default OFF. These can be user activated through the touchpad data entry access. Automatic start-up sequence will prepare the cabinet for normal operation and advise when safe conditions are established.

Blower Efficiency

The Universal Workstation blower system is designed for maximum energy efficiency and minimal maintenance. One permanently lubricated independent blower is used. The centrifugal, direct-drive, external rotor motor is selected to reduce noise, vibration, and improve motor bearing life.

Cabinet Airflow System

A m b i e n t a i r p u l l e d t h r o u g h t h e perforations towards the work zone front prevents contamination of the work surface and work product. The inflow does not mix with the clean air within the cabinet work zone. Inflow air travels through a return path toward the common air plenum (blower plenum) at the top of the cabinet. Approximately 40% of the air in the common plenum is exhausted through the ULPA filter to the room. The remaining 60% of the air is passed through the downflow ULPA filter and into the work area as a vertical laminar flow air stream bathing the work surface in clean air.

ULPA-filtered air Unfiltered / Potentially contaminated air Room air / Inflow air
The uniform, non-turbulent air stream protects against cross-contamination within and throughout the work area. Near the work surface, the ULPA-filtered downflow air stream splits with a portion moving toward the front air grille, and the remainder moving to the rear air grille. A small portion of the downflow enters the side capture zones at a higher velocity (small blue arrows). A combination of inflow and downflow air streams form an air barrier that prevents contaminated room air from entering the work zone, and prevents work surface emissions from escaping the work zone.
An administrator controlled PIN (personal identification number) can be set to restrict access to main menu. An independent airflow probe (standard) can be activated to warn of unsafe conditions.

Front Sash Assembly

Integrated sash proximity contacts sense proper sash position, serve as an interlock for the UV lamp, and activate alarm upon improper position. The sash is frameless to simplify cleaning by removing the side sash profile. All sash surfaces are easily accessible for cleaning from the front access; no tools required. The sash is counterbalanced for effortless one-hand operation. The inherently safe counterbalancing system remains in a safe position even if 1 out of the 2 cables is detached. The cabling system israted to 6x maximum weight of frontal sash. The laminated glass maintains containment even if the sash is inadvertently broken.
Tray lift handle to easily lift the tray and encourage surface decon. A recessed central area and stainless steel drain pan channels spills and prevent liquids from entering the lower filtration and blower systems. The drain pan is flush with the side walls to eliminate concealed or hardto-clean spaces. There are no screws in on the front or sides to trap contaminants or complicate cleaning. Optional service fittings are offset for easier access. External surfaces are coated with Esco Isocide antimicrobial coating to protect against surface contamination and inhibit bacterial growth. Isocide eliminates 99.9% of surface bacteria within 24 hours of exposure.
Consult your Esco Operating Manual or contact your Sales Representative for information on expanded programming capabilities built into the Sentinel microprocessor platform.
Comfortable Ergonomic Design
The VA2 cabinet is engineered for comfort, utility value and safety. The 10 angled viewing window and narrow profile front grille improves reach into the work area. The instant-start 5000k fluorescent lamp operates on an electronic ballast to reduce heat, improve comfort and conserve energy. The lamp delivers uniform lighting to the work surface for greater comfort, reduced glare and improved productivity; see Specifications. The front armrest is raised above the work zone to improve comfort and to ensure that the operators arms do not block the forward airflow perforations.

Electrical Safety and Certification
All components meet or exceed applicable safety requirements. Each cabinet is individually factory tested for electrical safety. Documentation specific to each cabinet serial number is maintained on file.

Cabinet Construction

The cabinet is fully assembled and ready to install and operate when shipped. The interior work area is formed from a single piece of stainless-steel with large radius corners to simplify cleaning. The cabinet work zone has no welded joints to collect contaminants or rust. All stainless steel work surfaces are accessible for cleaning.
Animal Containment Workstations Universal Animal Containment Workstation
Model VA2 Universal Access Workstation Technical Specifications

1515 mm (59.6")

450 mm (17.7") MAX

. OPENING

305 mm (12")

ACCESS OPENING

680 mm (26.8")
1260 mm (49.6") Model VA2-mm (73.6") Model VA2-mm (56.0") Model VA2-mm (79.9") Model VA2-6

815 mm (32.1")

1. Exhaust ULPA filter 2. Blower 3. Angled downflow ULPA filter 4. Carbon pre-filter
5. Electrical outlet Retrofit Kit provision (2 single outlets) 6. Electrical / Electronics panel 7. Fluorescent light
8. Plugged service fixture provisions 11.Esco Sentinel microprocessor (2 on each side wall) for gas / vacuum control system / nitrogen 12.Laminated glass sliding sash window 9. Stainless steel single-piece work tray 13.Stainless steel back wall and side wall 10.Stainless steel armrest 14.Removable side panel for plumbing access

2285 mm (90")

930 mm (36.6") Model VA2-4
1553 mm (61.2") Model VA2-mm (85.2") Model VA2-6
880 mm (34.6") Model VA2-6

858 mm (33.8")

1930 mm (76") Model VA2-mm (78") Model VA2-6

858mm (33.8")

The VA2 Universal Workstation mounted on motorized adjustable height mobile support stand, shown in fully elevated position.

The VA2 Universal Workstation mounted on motorized adjustable height mobile support stand, shown in fully lowered position to for safe movement through hallways and standard doorways.

General Specifications

External Dimensions (W x D x H) Maximum External Dimensions with Support Stand (W x D x H) Internal Work Area (W x D x H) Average Airflow Velocity Inflow Downflow Inflow Airflow Volume Downflow, 60% Exhaust, 40% ULPA Filter Typical Efficiency Sound Emission NSF 49 EN 12469

VA2-4A_ 1.2 m (4') Model

1423 x 815 x 1515 mm 56" x 32.1" x 59.6" 1553 x 858 x 1930 mm 60.7" x 34.1" x 90.0" 1260 x 620 x 680 mm 49.6" x 24.4" x 26.7" 0.45 m/s (90 fpm) 0.35 m/s (70 fpm) 625 m / h (368 cfm)

VA2-6A_ 1.8 m (6') Model

2030 x 815 x 1515 mm 79.9" x 32.1" x 59.6" 2163 x 858 x 1980 mm 84.6" x 34.1" x 92.1" 1870 x 620 x 680 mm 73.6" x 24.4" x 26.7"
921 m3 / h (542 cfm) 1414 m3 / h (832 cfm) 921 m3 / h (542 cfm) >99.999% at 0.1 to 0.3 microns
959 m3 / h (547 cfm) 625 m / h (368 cfm)
<64 dBA <61 dBA >1350 Lux (> 126 foot-candles) measured at work surface level, zero background
<67 dBA <64 dBA >1100 Lux (> 102 foot-candles) measured at work surface level, zero background
Fluorescent Lamp Intensity Cabinet Construction Net Weight Cabinet including stand Shipping Weight Cabinet including stand Shipping Dimensions, Maximum (W x D x H) Cabinet including stand Shipping Volume, Maximum
1.2 mm (18 gauge) electrogalvanized steel with Isocide white oven-baked epoxy power coating 406 kg (895 lbs) 480 kg (1058 lbs) 1600 x 940 x 2210 mm 63.0" x 37.0" x 87.0" 3.32 m3 (81 cu.ft.) Model Voltage 220-240V, AC, 50Hz, 1Ph, 4 amps 110-130V, AC, 60Hz, 1Ph, 11.5 amps 220-240V, AC, 60Hz, 1Ph, 4 amps Model VA2-6A1 VA2-6A2 VA2-6Akg (1164 lbs) 624 kg (1376 lbs) 2200 x 940 x 2210 mm 86.6" x 37" x 87.0" 4.57 m3 (161 cu.ft.) Voltage 220-240V, AC, 50Hz, 1Ph, 4 amps 110-130V, AC, 60Hz, 1Ph, 11.5 amps 220-240V, AC, 60Hz, 1Ph, 4 amps

Electrical*

VA2-4A1 VA2-4A2 VA2-4A3
*Cabinet model numbers are voltage specific, ending numbers 1. 3. Specify when ordering.

Standards Compliance

Air Quality
ISO 14644.1, Class 3, Worldwide JIS B9920, Class 3, Japan JIS BS5295, Class 3, Japan US Fed Std 209E, Class 1 USA

Filtration

EN-1822 (H14), Europe IEST-RP-CC001.3, USA IEST-RP-CC007, USA IEST-RP-CC034.1, USA

Electrical Safety

UL-61010A-1, USA CSA22.2, No.1010-192, Canada EN61010-1, Europe IEC61010-1, International

EN 12469

Warranty and Documentation
The Viva cabinet is warranted for 3 years excluding consumable parts and accessories. Each cabinet is shipped with a comprehensive Users Manual complete with a report documenting all test procedures. Additional IQ/OQ/PQ documentation is available upon request. Contact your local Sales Representative for specific warranty details or documentation requests.

Accessories and Options

Esco offers a variety of options and accessories to meet local applications. Contact Esco or your local Sales Representative for ordering information on these and other accessories.
Support Stand Infinitely adjustable motorized cradle stand, with castors -Elevates from seating to standing work surface height with a touch of a button. -When lowered permits movement through standard doorway. - Utilizes electro-hydraulic motor to adjust the height
Electrical Outlets and Utility Fixtures Electrical outlet, ground fault, North America Electrical outlet, Euro / Worldwide Cabinet Accessories Germicidal UV lamp -Controlled by automatic UV lamp timer through Sentinel microproces sor control panel. -Emission of 253.7 nanometers for most efficient decontamination. -Lamp is positioned away from operator line-of-sight for safety and proper exposure to interior surfaces. PVC armrest -Chemically treated, improves operator comfort, easy-to-clean. 712 mm (28") standard size.
Importance Of Safety In Animal Containment Laboratories
With the introduction of Viva Animal Containment Workstations, Esco applies decades of experience in clean air technologies to the animal research laboratory. Personnel involved in the care and use of research animals work in an environment that presents a number of unique hazards from several sources. Hazards related to the equipment, materials and practices used in performing routine animal husbandry. Hazards related directly or indirectly to animal contact. Hazards related to the techniques or materials or biohazardous substances that may be used during the course of animal research. According to US National Institute for Occupational Safety and Health (NIOSH), animal handlers should ensure measures are taken to protect themselves from exposure to animals and animal products which can cause occupational hazards such as asthma and allergies (NIOSH 1998). The Viva range of workstations has been specially designed to protect laboratory personnel, the environment and the laboratory animal, or any combination of the three, from contaminants and allergens. For more information on allergens in the animal laboratory and proper working procedures in the animal containment laboratory, refer to the Esco booklet: A Guide to Animal Containment Workstation". Visit our website at: http://biotech.escoglobal.com for more information.

Bryant DH, Boscato LM, Mboloi PN, Stuart MC [1995]. Allergy to laboratory animals among animal handlers. Med J Aust 163(8):415-418. Chan-Yeung M, Malo JL [1994]. Aetiological agents in occupational asthma. Eur Respir J 7:346 -371. DeGroot AC, Messerschmidt HJM [1984]. Laboratory animal allergy. Contact Dermatitis 11(2):121-122. Edwards RG, Beeson MF, Dewdney JM [1983]. Laboratory animal allergy: the measurement of airborne urinary allergens and the effects of different environmental conditions. Lab Anim 17(3):235-239. Eggleston PA, Wood RA [1992]. Management of allergies to animals. Allergy Proc 13(6): 289-292. Gordon S, Tee RD, Lowson D, Wallace J, Newman Taylor AJ [1992]. Reduction of airborne allergenic urinary proteins from laboratory rats. Br J Ind Med 49(6):416-422. Harries MG, Cromwell O [1982]. Occupational asthma caused by allergy to pigs' urine. Br Med J Clin Res 284(6319):867. Hollander A, Heederik D, Doekes G [1997]. Respiratory allergy to rats: exposure-response relationships in laboratory animal workers. Am J Respir Crit Care Med 155:562-567. Hunskaar S, Fosse RT [1993]. Allergy to laboratory mice and rats: a review of its prevention, management, and treatment. Lab Anim 27(3):206-221. Kibby T, Powell G, Cromer J [1989]. Allergy to laboratory animals: a prospective and cross-sectional study. J Occup Med 31(10):842-846. Lincoln TA, Bolton NE, Garrett AS Jr. [1974]. Occupational allergy to animal dander and sera. J Occup Med 16(7):456-469. Lutsky I, Baum GL, Teichtahl H, Mazar A, Aizer F, Bar-Sela S [1985]. Occupational respiratory disease in veterinarians. Ann Allergy 55:153-156. Newill CA, Evans III R, Khoury MJ [1986]. Preemployment screening for allergy to laboratory animals: epidemiologic evaluation of its potential usefulness. J Occup Med 28(11):1158-1164. Newman-Taylor AJ, Gordon S [1993]. Laboratory animal and insect allergy. In: Bernstein IL, Chan-Yeung M, Malo J-L, Bernstein DI, eds. Asthma in the workplace. New York, NY: Marcel Dekker, Inc., pp. 399-414. NHLBI (National Heart, Lung, and Blood Institute) [1995]. Global initiative for asthma.Global strategy for asthma management and prevention. NHLBI/WHO Workshop Report. Bethesda, MD: U.S. Department of Health and Human Services, Public Health Service, National Institutes of Health, NIH Publication No. 95-3659.
Ohman JL Jr. [1978]. Allergy in man caused by exposure to mammals. J Am Vet Med Assoc 172(1):1403-1406. Paggiaro PL, Vagaggini B, Bacci E, Bancalari L, Carrara M, Di Franco A, et al. [1994]. Prognosis of occupational asthma. Eur Respir J 7:761-767. Parker JE, Petsonk EL, Weber SL [1992]. Hypersensitivity pneumonitis and organic dust toxic syndrome. Immunol and Allergy Clin of North America 12(2):279-290. Renstrm A, Maimberg P, Larsson K, Sundblad B-M [1995]. Allergic sensitization is associated with increased bronchial responsiveness: a prospective study of allergy to laboratory animals. Eur Respir J 8:1514-1519. Sakaguchi M, Inouye S, Miyazawa H, Kamimura H, Kimura M, Yamazaki S [1990]. Evaluation of countermeasures for reduction of mouse airborne allergens. Lab Anim Sci 40(6):613-615. Salvaggio JE, Taylor G, Weill H [1986]. Occupational asthma and rhinitis. In: Merchant JA, ed. Occupational respiratory diseases. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 86-102, pp. 461-477. Venables KM, Chan-Yeung M [1997]. Occupational asthma. Lancet 349:1465-1469. Venables KM, Farrer N, Sharp L, Graneek BJ, Newman-Taylor AJ [1993]. Respiratory symptoms questionnaire for asthma epidemiology: validity and reproducibility. Thorax 48(3):214-219. Watt AD, McSharry CP [1996]. Laboratory animal allergy: anaphylaxis from a needle injury. Occup Environ Med 53:573-574. Zejda JE, Hurst TS, Rhodes CS, Barber EM, McDuffie HH, Dosman JA [1993]. Respiratory health of swine producers. Focus on young workers. Chest 103(3):702-709. Zuskin E, Kanceljak B, Stilinovic L, Schachter EN, Kopjar B [1992a]. Immunological status and respiratory findings in furriers. Am J Ind Med 21(3):433-441. Zuskin E, Zagar Z, Schachter EN, Mustajbegovic J, Kern J [1992b]. Respiratory symptoms and ventilatory capacity in swine confinement workers. Br J Ind Med 49(6):435-440.

For More Information

Source: Preventing Asthma in Animal Handlers, January 1998 DHHS (NIOSH) Publication No. 97-116. Aoyama K, Ueda A, Manda F, Matsushita T, Ueda T, Yamauchi C [1992]. Allergy to laboratory animals: an epidemiological study. Br J Ind Med 49(1):41-47. Bardana EJ Jr. [1992]. Occupational asthma and related conditions in animal workers. In: Bardana EJ Jr., Montanaro A, O'Hollaren MT, eds. Occupational asthma. Philadelphia, PA: Hanley & Belfus. Bar-Sela S, Teichtahl H, Lutsky I [1984]. Occupational asthma in poultry workers. J Allergy Clin Immunol 73(2):271-275. Beckett WS [1994]. The epidemiology of occupational asthma. Eur Respir J 7:161-164. Brooks SM [1992]. Occupational and environmental asthma. In: Rom WN, ed. Environmental and occupational medicine. 2nd ed. Boston, MA: Little, Brown and Company, pp. 393-446.
Esco Containment, Clean Air and Laboratory Equipment Products
Biological Safety Cabinets, Class II, III Fume Hoods, Conventional, High Performance, Ductless Carbon Filtered Laminar Flow Cabinets, Horizontal, Vertical, PCR Animal Containment Workstations Hospital Pharmacy Isolators, Cytotoxic Safety Cabinets Specialty Workstations: In-Vitro Fertilization, Powder Weighing PCR Thermal Cyclers, Conventional, Real-Time Cleanroom Fan Filter Units, Modular Rooms, Air Showers, Pass Thrus Since 1978, Esco has emerged as a leader in the development of controlled environment, laboratory and cleanroom equipment solutions. Products sold in more than 95 countries include biological safety cabinets, fume hoods, ductless fume hoods, laminar flow clean benches, animal containment workstations, cytotoxic cabinets, hospital pharmacy isolators, and PCR cabinets and instrumentation. With the most extensive product line in the industry, Esco has passed more tests, in more languages, for more certifications, throughout more countries than any biosafety cabinet manufacturer in the world. Esco remains dedicated to delivering innovative solutions for the clinical, life science, research and industrial laboratory community. www.escoglobal.com.
NSF Standard 49 Biological Safety Cabinets Animal Containment Workstations Fume Hoods Clean Benches
Esco Technologies, Inc. 2940 Turnpike Drive, Units 15-16 Hatboro, PA 19040, USA Toll-Free USA and Canada 888-375-ESCO Tel 215-441-9661 Fax 215-441-9660 www.escoglobal.com usa@escoglobal.com Esco Micro Pte. Ltd. 21 Changi South Street 1 Singapore Tel +0833 Fax +6920 mail@escoglobal.com www.escoglobal.com
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Viva Dual Access Animal Containment Workstation, Model VDA-4A_
Dual Access Animal Containment Workstation
The Portable Safety Solution for Animal Research Laboratories

Main Features

Sentinel Microprocessor controller supervises all functions. Independent Minihelic gauges indicate both supply and exhaust filter pressures. Long-life ULPA filters protect supply and exhaust airflow (IEST-RP-CC001.3). Activated carbon filter removes odors. Work area lighting is bright and uniform to help improve productivity. Angled edges on drain area and integral work surface/grille component removal simplify cleaning.
Recessed airflow grille prevents blockage to maintain performance. Esco antimicrobial coating on all painted surfaces. Retractable power cord stores easily for moving workstation from one lab to another. (115V, AC Model only)
The Viva Dual Access Animal Containment Workstation, Model VDA-4A_ is KI-Discus tested for performance integrity.
Containment and Protection
The Esco Viva Dual Access Animal Containment Workstation provides clean air performance to help protect investigators and animal handlers from exposure to animals and animal products which can cause occupational hazards such as asthma and allergies.1 The Dual Access Workstation protects the operator from airborne contamination during cage changing or other procedures. At the same time, the workstation protects the animals or work product from external and cross-contamination, and protects the environment from allergens and particulate emissions.
National Institute for Occupational Safety and Health (NIOSH) 1998, Preventing Asthma in Animal Handlers, DHHS (NIOSH) Publication No. 97-116. Visit www.cdc. gov/niosh/animalrt.html.
Lab Animal Research Products Dual Access Animal Containment Workstation
Touchpad data entry buttons permit control settings and access to diagnostics, default settings and hierarchical menus. Color coded indicator lamps display green for primary function (fan operation); blue for secondary function (fluorescent lights and electrical outlet); and orange for caution (UV lamp ON).
A graphical interface indicates cabinet performance. Digital read-out with alpha-numeric display indicates all input, status and alarm functions. All functions can be user activated through touch-pad programming access; see Operations Manual.
Sentinel Microprocessor Control System, Programmable
When programmed ON the start-up sequence confirms status with Air Safe and local time display. the Personal Identification Number (PIN) access restricts unauthorized adjustments. an airflow alarm warns of deviations from normal velocities.
The push/pull airflow system creates a non-recirculating vertical laminar flow of ISO Class 4 clean air across the work surface per ISO14644.1. The cabinet work zone is fully accessible from two sides to permit multiple user access. A large 350 mm (14") opening accommodates standard size animal cages. Hinged windows on both sides can be opened for a 530 mm (20.5") access for handling larger items.
When fully lowered to a height of 1918 mm (75.5") the cabinet can be wheeled from lab to lab. A stainless steel push/pull bar is mounted on one end.

Balanced Airflow

Contaminated room air does not enter the work area. Intake and exhaust ratios are factory balanced before shipment to assure proper performance of the resulting air curtain. The inflow of room air is captured in the slots peripheral to the work surface before it can contaminate the work area. Independent Minihelic gauges display both supply and exhaust filter pressures.
Integrated Filtration System
A combination of twin ULPA filters, an activated carbon filter and an intake air pre-filter give the workstation a fully integrated envelope for animal, operator and environmental protection. Mini-pleat ULPA filters are tested to >99.999% efficiency for 0.1 - 0.3 micron particulates, better than HEPA filters. An improved mini-pleat separation technique maximizes filter surface area, improves efficiency and extends filter life over conventional separation. The disposable pre-filter traps larger particulates before they enter the blower chamber, and protects the supply ULPA filter to extend filter life. The supply ULPA filter supplies clean air to the work surface in a gentle vertical laminar flow. An activated carbon filter removes odors from the ULPA filtered exhaust air stream before returning air to the laboratory. The exhaust ULPA filter removes all allergens and particulates acquired from the work surface before the air is exhausted to the room.

Comfortable Ergonomic Design, Portable
All Viva workstations are engineered for comfort, utility value and safety. Angled viewing windows reduce glare and permit easier reach into the work area from either side. Instant-start 5000k fluorescent lamps operate on electronic ballasts for energy efficiency. Lamps deliver 1100 Lux (> 102 footcandles) to the work surface for overall illumination. The work surface height is electrically adjustable from 864 to 1164 mm (34" to 46") for ergonomic comfort and operator convenience. The workstation is easily moved on non-marking 125 mm (5") wheels with locking brakes.

Blower Efficiency

The Dual Access Workstation blower system is designed for maximum energy efficiency and minimal maintenance. Two independent blowers are used, one for the supply filter and one for the exhaust filter. Centrifugal, direct-drive, external rotor motors are selected to reduce operating costs. Unique Esco motor/blower orientations minimize noise and vibration. Built-in solid-state variable speed controllers are infinitely adjustable from Off to Maximum. Built-in RFI and electrical noise filters eliminate interference with adjacent instrumentation.

Cabinet Airflow System

The Model VDA Dual Access Workstation employs a total exhaust, non-recirculating airflow configuration. The blower system pulls ambient intake air through the pre-filter, trapping larger dust particles and extending the useful life of the ULPA filter. Air flows through the main ULPA supply filter and bathes the work zone in clean air with a non-turbulent airflow. Recessed air grilles on the peripheral work surface collect ambient air. Combined with vertical laminar downflow, the VDA creates an air curtain to protect the operator from contaminants released from the work surface. An activated carbon filter removes odors. The exhaust ULPA filter removes contaminants before air is returned to the environment.
ULPA-filtered air Unfiltered / Potentially contaminated air Room air / Inflow air

Sentinel Microprocessor Control, Alarm, Monitoring System
The Esco Sentinel microprocessor-based control system supervises operation of all cabinet functions. Control levels are locally configurable to meet user requirements.
An administrator controlled PIN (Personal Identification Number) can be set to restrict access to main menu. An independent airflow probe (standard) can be activated to warn of unsafe conditions. Consult your Esco Operating Manual or contact your Sales Representative for information on expanded programming capabilities built into the Sentinel microprocessor platform.
Documentation specific to each cabinet serial number is maintained on file. The Viva workstations meet general safety requirements set forth by independent testing laboratories (see Specifications). UL listing pending for USA and Canada.
Continuous monitoring of cabinet airflow is displayed on a bright, easyto-read LCD panel. Integrated, temperature-compensated true airflow velocity sensors provide the highest control accuracy. Additional Sentinel functions are factory set to default OFF. These can be user activated through the touchpad data entry access. Automatic start-up sequence will prepare the cabinet for normal operation and advise when safe conditions are established.
Cabinet Design and Construction
Robust construction and enhanced safety features qualify the workstation for the most demanding laboratory applications. A recessed central area and stainless steel drain pan contain spills and prevent liquids from entering the lower filtration and blower systems. Work surface air intake grilles are configured to prevent obstructions by objects placed outside the work zone. The cabinet structure is constructed of industrial-grade electrogalvanized steel. External surfaces are coated with Esco Isocide antimicrobial coating to protect against surface contamination and inhibit bacterial growth. Isocide eliminates 99.9% of surface bacteria within 24 hours of exposure.
Electrical Safety and Certification
All components used in Esco products meet or exceed applicable safety requirements. Retractable power cord stores easily for moving from one location to another (110-120 V, 60 Hz model only). Each cabinet is individually factory tested for electrical safety.

The stainless steel work surface is easy to clean. Tray components lift, tilt and fix position to provide access and simplify surface decontamination.
Model VDA-4A_ Dual Access Animal Containment Workstation Technical Specifications
1918 - 2220 mm (75.5"- 87.5")
864 - 1168 mm (34"- 46") 350 mm (14") 1251 mm (49.3")
1344 mm (52.9") 760 mm (30")
1. Pre-filter 2. Downflow blower 3. Downflow ULPA filter 4. Fluorescent light 5. Transparent side panel
6. Electrical outlet Retrofit Kit provisions (2 nos) 7. Stainless steel single-piece work surface 8. Second pre-filter 9. Activated carbon exhaust filter
10.Exhaust blower 11.Exhaust ULPA filter 12.Castor wheels 13.Sentinel microprocessor control 14.Minihelic pressure gauge
15.Hinged polycarbonate window 16.Steel side handle 17.Electrical / Electronics service panel 18.Exhaust airflow sensor

Warranty

The Viva Dual Access Workstation is warranted for 3 years excluding consumable parts and accessories. Contact your local Sales Representative for specific warranty details.

Accessories and Options

Contact Esco or your Esco Sales Representative for details. Electrical outlet, ground fault Electrical outlet Plastic shield Foldable side tray Side shield Feed hopper

Side shield

Feed Hopper

General Specifications

External Dimensions (W x D x H) Internal Work Area (W x D x H) Downflow Velocity Pre-Filter ULPA Filter Typical Efficiency Sound Emission Fluorescent Lamps Construction, Main Body Shipping Dimensions, Maximum (W x D x H) Shipping Weight Shipping Volume, Maximum
Model VDA-4A_ Dual Access Animal Containment Workstation
1344 x 760 x 1918 mm (52.9" x 30.0" x 75.5") minimum height 1344 x 760 x 2220 mm (52.9" x 30.0" x 87.5") maximum height 1251 x 628 x 584 mm (49.3" x 24.7" x 23.0") Initial setpoint: 0.30 meters/second (60 ft./min) Disposable, non-washable polyester fiber, 85% arrestance, EU3 rated >99.999% at 0.1 to 0.3 microns Typically <60.5 dBA at initial blower speed setting (subject to acoustic properties of test environment) > 1,100 Lux (> 102 foot-candles) measured at work surface level, zero background 1.2 mm (18 gauge) electrogalvanized steel with Isocide white oven-baked epoxy power coating 1480 x 840 x 2100 mm (58.3" x 33.1" x 82.7") 263 kg (580 lbs) 2.6 m3 (92 cu.ft.) Model VDA-4A1 Voltage 220-240V, AC, 50Hz, 1Ph 4.5 amps 110-120V, AC, 60Hz, 1Ph 9 amps 220-240V, AC, 60Hz, 1Ph 4.5 amps 100V, AC, 50/60Hz, 1Ph 9 amps

Electrical*

VDA-4A2 VDA-4A3 VDA-4A7
* Additional voltages available.

Air Quality

Standards Compliance ISO 14644.1, Class 4, Worldwide JIS B9920, Class 4, Japan JIS BS5295, Class 4, Japan US Fed Std 209E, Class 10 USA

Filtration

EN-1822 (H14), Europe IEST-RP-CC001.3, USA IEST-RP-CC007, USA IEST-RP-CC034.1, USA

Electrical Safety

UL-61010A-1, USA CSA22.2, No.1010-192, Canada EN61010-1, Europe IEC61010-1, International
The Viva VDA Dual Access Workstation is easily accessible from two sides permitting multiple users to work at the same time. A large 350 mm (14") opening accommodates standard size animal cages. The transparent side panel (shown in the raised position) opens and stays to simplify loading or unloading of the work surface. The entire cabinet elevation can be adjusted by an integrated electric hydraulic lift with an up/down switch mounted on the control panel. The cabinet lowers to 1918 mm (75.5") for easy transport from lab to lab through a standard doorway. Cabinet shown in semi-elevated position to fit user preference.
Importance Of Safety In Animal Containment Laboratories
With the introduction of Viva Animal Containment Workstations, Esco applies decades of experience in clean air technologies to the animal research laboratory. Personnel involved in the care and use of research animals work in an environment that presents a number of unique hazards from several sources. Hazards related to the equipment, materials and practices used in performing routine animal husbandry. Hazards related directly or indirectly to animal contact. Hazards related to the techniques or materials or biohazardous substances that may be used during the course of animal research. According to US National Institute for Occupational Safety and Health (NIOSH), animal handlers should ensure measures are taken to protect themselves from exposure to animals and animal products which can cause occupational hazards such as asthma and allergies (NIOSH 1998). The Viva range of workstations has been specially designed to protect laboratory personnel, the environment and the laboratory animal, or any combination of the three, from contaminants and allergens. For more information on allergens in the animal laboratory and proper working procedures in the animal containment laboratory, refer to the Esco booklet: A Guide to Animal Containment Workstation. Visit our website at: http://biotech.escoglobal.com for more information.

Bryant DH, Boscato LM, Mboloi PN, Stuart MC [1995]. Allergy to laboratory animals among animal handlers. Med J Aust 163(8):415-418. Chan-Yeung M, Malo JL [1994]. Aetiological agents in occupational asthma. Eur Respir J 7:346 -371. DeGroot AC, Messerschmidt HJM [1984]. Laboratory animal allergy. Contact Dermatitis 11(2):121-122. Edwards RG, Beeson MF, Dewdney JM [1983]. Laboratory animal allergy: the measurement of airborne urinary allergens and the effects of different environmental conditions. Lab Anim 17(3):235-239. Eggleston PA, Wood RA [1992]. Management of allergies to animals. Allergy Proc 13(6): 289-292. Gordon S, Tee RD, Lowson D, Wallace J, Newman Taylor AJ [1992]. Reduction of airborne allergenic urinary proteins from laboratory rats. Br J Ind Med 49(6):416-422. Harries MG, Cromwell O [1982]. Occupational asthma caused by allergy to pigs' urine. Br Med J Clin Res 284(6319):867. Hollander A, Heederik D, Doekes G [1997]. Respiratory allergy to rats: exposure-response relationships in laboratory animal workers. Am J Respir Crit Care Med 155:562-567. Hunskaar S, Fosse RT [1993]. Allergy to laboratory mice and rats: a review of its prevention, management, and treatment. Lab Anim 27(3):206-221. Kibby T, Powell G, Cromer J [1989]. Allergy to laboratory animals: a prospective and cross-sectional study. J Occup Med 31(10):842-846. Lincoln TA, Bolton NE, Garrett AS Jr. [1974]. Occupational allergy to animal dander and sera. J Occup Med 16(7):456-469. Lutsky I, Baum GL, Teichtahl H, Mazar A, Aizer F, Bar-Sela S [1985]. Occupational respiratory disease in veterinarians. Ann Allergy 55:153-156. Newill CA, Evans III R, Khoury MJ [1986]. Preemployment screening for allergy to laboratory animals: epidemiologic evaluation of its potential usefulness. J Occup Med 28(11):1158-1164. Newman-Taylor AJ, Gordon S [1993]. Laboratory animal and insect allergy. In: Bernstein IL, ChanYeung M, Malo J-L, Bernstein DI, eds. Asthma in the workplace. New York, NY: Marcel Dekker, Inc., pp. 399-414. NHLBI (National Heart, Lung, and Blood Institute) [1995]. Global initiative for asthma.Global strategy for asthma management and prevention. NHLBI/WHO Workshop Report. Bethesda, MD: U.S. Department of Health and Human Services, Public Health Service, National Institutes of Health, NIH Publication No. 95-3659.
Ohman JL Jr. [1978]. Allergy in man caused by exposure to mammals. J Am Vet Med Assoc 172(1):1403-1406. Paggiaro PL, Vagaggini B, Bacci E, Bancalari L, Carrara M, Di Franco A, et al. [1994]. Prognosis of occupational asthma. Eur Respir J 7:761-767. Parker JE, Petsonk EL, Weber SL [1992]. Hypersensitivity pneumonitis and organic dust toxic syndrome. Immunol and Allergy Clin of North America 12(2):279-290. Renstrm A, Maimberg P, Larsson K, Sundblad B-M [1995]. Allergic sensitization is associated with increased bronchial responsiveness: a prospective study of allergy to laboratory animals. Eur Respir J 8:1514-1519. Sakaguchi M, Inouye S, Miyazawa H, Kamimura H, Kimura M, Yamazaki S [1990]. Evaluation of countermeasures for reduction of mouse airborne allergens. Lab Anim Sci 40(6):613-615. Salvaggio JE, Taylor G, Weill H [1986]. Occupational asthma and rhinitis. In: Merchant JA, ed. Occupational respiratory diseases. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 86-102, pp. 461-477. Venables KM, Chan-Yeung M [1997]. Occupational asthma. Lancet 349:1465-1469. Venables KM, Farrer N, Sharp L, Graneek BJ, Newman-Taylor AJ [1993]. Respiratory symptoms questionnaire for asthma epidemiology: validity and reproducibility. Thorax 48(3):214-219. Watt AD, McSharry CP [1996]. Laboratory animal allergy: anaphylaxis from a needle injury. Occup Environ Med 53:573-574. Zejda JE, Hurst TS, Rhodes CS, Barber EM, McDuffie HH, Dosman JA [1993]. Respiratory health of swine producers. Focus on young workers. Chest 103(3):702-709. Zuskin E, Kanceljak B, Stilinovic L, Schachter EN, Kopjar B [1992a]. Immunological status and respiratory findings in furriers. Am J Ind Med 21(3):433-441. Zuskin E, Zagar Z, Schachter EN, Mustajbegovic J, Kern J [1992b]. Respiratory symptoms and ventilatory capacity in swine confinement workers. Br J Ind Med 49(6):435-440.

For More Information

Source: Preventing Asthma in Animal Handlers, January 1998 DHHS (NIOSH) Publication No. 97-116. Aoyama K, Ueda A, Manda F, Matsushita T, Ueda T, Yamauchi C [1992]. Allergy to laboratory animals: an epidemiological study. Br J Ind Med 49(1):41-47. Bardana EJ Jr. [1992]. Occupational asthma and related conditions in animal workers. In: Bardana EJ Jr., Montanaro A, O'Hollaren MT, eds. Occupational asthma. Philadelphia, PA: Hanley & Belfus. Bar-Sela S, Teichtahl H, Lutsky I [1984]. Occupational asthma in poultry workers. J Allergy Clin Immunol 73(2):271-275. Beckett WS [1994]. The epidemiology of occupational asthma. Eur Respir J 7:161-164. Brooks SM [1992]. Occupational and environmental asthma. In: Rom WN, ed. Environmental and occupational medicine. 2nd ed. Boston, MA: Little, Brown and Company, pp. 393-446.
Biological Safety Products Cleanroom Products Containment / Pharma Products Ductless Fume Hoods / Carbon Filtration General Purpose Scientific Equipment Industrial Lab Equipment In-Vitro Fertilization Products PCR Products Pharmacy Products Lab Animal Research Products Lab Thermostatics Products Lab Ventilation / Chemical Fume Products / Lab Furniture Powder Handling Products Since 1978, Esco has emerged as a leader in the development of controlled environment, laboratory and cleanroom equipment solutions. Products sold in more than 100 countries include biological safety cabinets, cleanroom products, compounding pharmacy equipment, containment / pharma products, ductless fume hoods, in vitro fertilization workstations, lab animal research products, laboratory fume hoods, laboratory ovens and incubators, laminar flow clean benches and PCR products and instrumentation. With the most extensive product line in the industry, Esco has passed more tests, in more languages, for more certifications, throughout more countries than any biosafety cabinet manufacturer in the world. Esco remains dedicated to delivering innovative solutions for the clinical, life science, research and industrial laboratory community. www.escoglobal.com.
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2010 Esco Micro Pte. Ltd. Specifications Subject to Change. OW8281F_V2_03/10