Class II, Type A2 Biological Safety Cabinets

Class II, Type A2 Biological Safety Cabinets
Labculture Reliant Class II, Type A2
Biological Safety Cabinet, Model LR2-4S2.
Class II, Type A2 Biological Safety Cabinets
The Safety Solution for Life Science Laboratories
Main Features
The angled front, narrow profile front grille, raised
armrest and frameless sash creates an ergonomic
work environment.
Single piece stainless steel work tray and front
grille, lower drain pan with angled sides and single
piece work zone liner eliminates joints for superior
ULPA filters (per IEST-RP-CC-001.3) are tested to a
typical efficiency of >99.999% for 0.1 to 0.3 micron
particles, better than HEPA filters. ULPA filters last
as long as conventional HEPA filters with similar
replacement costs.
Dual-wall construction surrounds the work
zone with negative pressure plenums for
maximum safety.
antimicrobial coating on all
powder coated surfaces eliminates 99.9% of
surface bacteria within 24 hours of exposure.
Reliable rocker switches and Minihelic™
pressure gauge.
The cabinets are KI-Discus tested on sampling basis
for performance integrity.
Available in 4' and 6'. Shown with optional stand.
Tested on NSF 49 and UL 61010 certified
for safety and performance for selected size.
Biological Safety Cabinet • Class II, Type A2 Biological Safety Cabinets
• The ULPA downflow (supply) filter is
tilted proportional to the cabinet front
angle to direct more air forward to the
front air grille.
• The inflow velocity, downflow velocity,
air flow path, and intake geometry are
precision tuned and tested to create an
optimum air curtain on the front aperture;
this curtain maintains personnel and
product protection even in the unlikely
event of a severe inflow or downflow
imbalance that would compromise
protection in a conventional cabinet.
Integrated Filtration System
Operator, Product and Environmental Protection
The Esco Labculture Reliant Class II, Type A2 Biosafety
Cabinet provides operator, product and environmental
protection for Biosafety Levels 1, 2 and 3 work. This
cabinet can be used for handling Biohazard Level 4,
provided that the operator wears positive pressure suit.
Containment and Protection
The airflow ratio of 63% recirculation to
37% exhaust increases operator protection
beyond the 70%/30% ratio of conventional
biological safety cabinets.
A combination of a supply ULPA filter and
an exhaust ULPA filter give the Labculture
Reliant cabinet a fully integrated
performance envelope for product,
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;
these provide better filtration capability
than conventional HEPA filters that
have a typical efficiency of >99.99% for
0.3 micron particles.
Mini-pleat Separatorless Filter (left) vs.
Conventional Aluminium Separator Filter (right)
• The front grille has proportionally larger
perforations on the extreme left and
right side. Combined with the side air
gap between the work tray and the side
wall, the stronger side capture zones
increase protection in this critical area
where contaminants tend to bleed out
in conventional cabinets.
• Auto-purge holes located at the front
side walls eliminate eddy currents and
dead air pockets in the critical area
behind the sash window. Per NSF/ANSI
49 requirement, these side perforations
do not extend completely to the work
surface to prevent accidental liquid
spills in the work zone from entering
the side air column.
• The filter frame and media is constructed
in accordance with EN 1822 requirements
for fire retardant properties.
• The supply ULPA filter provides ISO Class
3 (per ISO14644.1) clean air to the work
surface in a gentle vertical laminar flow
for product protection.
• The exhaust ULPA filter traps biohazard
particles acquired from the work surface
before air is exhausted to the room,
offering personnel and environmental
• The exhaust filter media is protected
from mechanical damage by an
integrated metal screen guard, which is
absent from conventional HEPA filters.
Front Sash Assembly
• Integrated sash proximity contacts
sense proper sash position, serve as an
interlock for the UV lamp, and activate
an alarm if the sash is improperly
• The magnetic switch eliminates the
chance of wear and tear typical of a
mechanical switch.
• The inflow and downflow balance is
precisely established by an external
exhaust damper and is adjustable
without decontaminating the cabinet.
• Inflow of room air enters the front air
grille to establish operator protection;
room air does not enter the work zone,
preventing product contamination.
• Modern separator-less mini-pleat filter
construction maximizes the filter surface
area to extend filter life and eliminate
possible filter media damage by thin
and sharp aluminum separators used in
conventional HEPA filter construction.
• The back of the sash can be easily
cleaned by removing the sash track
cover and swinging up the sash glass.
Esco cabinets use Swedish Camfil Farr mini-pleat
filters without aluminum separators to increase filter
efficiency, minimize the chance of leakage, and to
prolong filter life. Filters include a lightweight
aluminum frame for structural stability and
elimination of swelling common to conventional
wood frames.
• The sash is counterbalanced for smooth,
lightweight operation.
• The counterbalance locking mechanism
is inherently safe; it locks the counterbalance in place if either of the 2 cables
is detached. The sash cable and cable
Esco ULPA Filter Efficiency
Typical Penetration
Esco cabinets use ULPA filters
(per IEST-RP-CC001.3) instead
of conventional HEPA filters
commonly found in biological
safety cabinets. While HEPA filters
offer >99.99% typical efficiency
at 0.3 micron level, ULPA
filters provide >99.999% typical
efficiency for particle sizes of 0.1
to 0.3 micron level.
Cabinet Filtration System
Side capture zones
Dynamic air barrier, inflow and forward-directed downflow air converge
Ambient air is pulled through the
perforations located towards the work
zone front to prevent 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.
ULPA-filtered air
Unfiltered / potentially contaminated air
Room air / Inflow air
clip have rated strength of more than
6 times the weight of the sash window
of the largest Labculture Reliant Class
II cabinet (1.8 meter / 6 ft. model).
Blower Efficiency
The Labculture Reliant blower system is
designed for high performance operation,
maximum energy efficiency and minimal
• The external rotor motor design allows
for optimum cooling of the motor
during extended operations and extends
the motor bearing life.
• The permanently lubricated direct-drive
external rotor motor/blower reduces
operating costs.
• To prevent fan damage, a paper-catch
grille traps papers or towels, preventing
them from being pulled into the column
by fan suction.
Approximately 37% of the air in the
common plenum is exhausted through
the ULPA filter to the room. The
remaining 63% 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.
Near the work surface, the 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 ULPA filtered
downflow enters the intake perforations
at the side capture zones at a higher
velocity (small blue arrows).
A combination of inflow and downflow
air streams forms an air barrier that
prevents contaminated room air from
entering the work zone, and prevents
work surface emissions from escaping
the work zone.
Air returns to the common air plenum
where the 37% exhaust and 63%
recirculation process is continued.
The uniform, non-turbulent air stream
protects against cross contamination
within and throughout the work area.
Esco Standard Control System
The standard cabinet control system
consists of separate switches for blower,
lights/ UV lamp, and socket plus a pressure
gauge for airflow monitoring. The UV
light can only be switched on when the
sash is fully closed to provide protection
to the user.
• All Electrical parts are contained inside a
plug-and play module that permits easy
replacement if required.
Cabinet Construction
Robust construction and enhanced safety
features qualify the cabinet for the most
demanding laboratory applications. The
cabinet is fully assembled, 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.
Esco Centrifugal Fan with External Rotor Motor (left) vs.
Conventional Fan with Standard Motor (right)
Esco cabinets use German made ebm-papst®
permanently lubricated, centrifugal motor/
blowers with external rotor designs.
Integrated blades narrow the profile and
eliminate need for a motor shaft.
Motors are selected for energy efficiency,
compact design, and flat profile. The completely
integrated assembly optimizes motor cooling.
All rotating parts are unitized and balanced for smooth, quiet, vibration-free operation.
Biological Safety Cabinet • Class II, Type A2 Biological Safety Cabinets
• The cabinet work zone has no welded
joints to collect contaminants.
• All stainless steel work area surfaces are
accessible for cleaning.
• Work surface lifts and removes for easy
surface decontamination.
• 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 on the front or sides
to trap contaminants or complicate
• 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.
Comfortable Ergonomic Design
The LR2 cabinet is engineered for comfort,
utility value and safety.
• The 5° angled viewing window and
narrow profile front grille improves
access into the work area.
UV or light
Blower switch
Pressure gauge to
monitor pressure
across filter
• The instant-start 5000k fluorescent
lamp with electronic ballast reduces
heat and conserves energy.
• The sliding window can be fully opened
to insert and remove larger instrumentation and equipment.
• Contact Esco or your Sales Representative
for site preparation information; see
Electrical Specifications.
• The lamp delivers uniform lighting to
the work surface for greater comfort,
reduced glare for improved productivity;
see page 7, Technical Specifications.
Electrical Safety and Certification
All components meet or exceed applicable
safety requirements.
The Labculture cabinet is warranted for
3 years excluding consumable parts and
• The front armrest is raised above the
workzone to improve comfort and to
ensure that the operator’s arms do not
block the forward airflow perforations.
• Each cabinet is individually tested for
electrical safety at the factory.
• The optional adjustable support stand
provides work surface height control.
• UL Listed for USA and Canada.
• Documentation specific to each cabinet
serial number is maintained on file.
• Complies with many world standards
for biological safety cabinets, including NSF / ANSI 49 (refer to Standards
Compliance table on this page for the
full list).
• The frameless sash eliminates operator's
line of sight blockage
• A generous sash opening allows for
easier access into the work zone,
provides ample room for transferring of
small equipment.
• Each cabinet is shipped with a comprehensive user’s manual complete with a
report documenting all test procedures.
• Additional IQ/OQ documentation is
available upon request.
• Contact your local Sales Representative
for specific warranty details or documentation requests.
Robust Cabinet Construction and Enhanced Safety Features
Service fixtures are offset for easier reach. Standard cabinets include two fixture provisions on each sidewall (one provision on each sidewall for 0.9 meter/3 ft. cabinet). Electrical outlets are mounted below service fixtures to minimize obstructions.
Helpful for certifiers, the hinged maintenance assembly opens to a fixed position on integrated, stainless steel
supports providing front service access.
All key components, with the exception of the blower/motor assembly, are mounted outside the air stream and away from contaminated air to permit service without decontamination. These include fluorescent lamps,
motor capacitor, electrical harnesses, electronic ballast and switch control.
Panels enclosing potentially hazardous areas, microbiological contamination or electrical shock are color-coded red to warn service technician.
The exterior and interior of the cabinet is coated with Isocide™ antimicrobial coating that helps to protect service
technician who accessed the potentially contaminated area. (Noted: The cabinets still must be decontaminated by
formaldehyde/ chlorine dioxide/ hgdrogen peroxide prior to accessing potentially contaminated areas.)
The telescoping Dynamic Chamber™ plenum minimizes physical lifting and accelerates filter change when required.
The one piece stainless steel work tray edges are radiused and easy to clean without crevices or joints.
The lower drain trough is a single-piece fabrication with wide open angles and a channel to direct spills to the drain.
The closed sidewall contains no air return gap or other hidden areas where contaminants can accumulate.
• Telescoping height stand for casters, nominal range 660 mm or 880 mm (26" or 34.6")
-Adjustable in 25.4 mm (1") increments
Dynamic Chamber™ Plenum Design
Negative pressure
• Cradle stand, electrical hydraulic,
infinitely adjustable, with casters
- Elevates to accommodate user
preference for sitting or standing
work surface height.
- When lowered permits movement
through standard doorway.
Positive pressure
The Esco double-wall design creates a Dynamic
Chamber plenum which surrounds contaminated
areas with negative pressure, preventing the
possibility of contamination from leaks in filter
seal, gasket or cabinet structure.
Note: Increases exterior dimensions.
Electrical Outlets and Utility Fixtures
• Electrical outlet, ground fault,
North America
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.
Support Stands
• Fixed height, available 711 mm (28")
or 864 mm (34"), ±38.1 mm (1.5")
-With leveling feet
-With casters
• Electrical outlet, Europe / Worldwide
• Petcock (air, gas, vacuum)
- North America (American) style
- Europe / Worldwide style DIN 12898, DIN 12919, DIN 3537
• Ergonomic foot rest
- Angled, helps maintain proper
- Adjustable height
- Anti-skid coating, chemical resistant finish.
• IV bar, with hooks
- Stainless steel construction
- Available for all standard Esco cabinets.
Microscope viewing device
Mounting and viewing pouch integrated into sash. Factory installed; specify when ordering.
Cabinet Accessories
• Germicidal UV lamp
- Emission of 253.7 nanometers for
most efficient decontamination.
• Telescoping height stand for leveling feet, nominal range 660 mm or 960 mm (26" or 37.8")
Note: UV lamp intensity reduces over time
and its effectiveness is subject to factors such
as relative humidity, ambient air temperature
and target microbes.
Antimicrobial Powder-Coating
Bacterial Population (10 folds)
Adjustable height, hydraulic range
711 mm to 864 mm (28" to 34")
-With leveling feet
-With casters
• PVC armrest
- Chemically treated, improves operator comfort, easy-to-clean. 711 mm (28") standard size.
• Ergonomic lab chair
- Laboratory grade construction,
meets Class 100 cleanliness; alcohol
resistant PVC materials
- Adjustable 395-490 mm (15.6"-19.3")
All exterior painted surfaces are powder-coated
with Esco IsocideTM, an antimicrobial inhibitor to
minimize contamination. IsocideTM is integrated into
the coating substrate and cannot wash out or
diminish by repeated cleaning. Performance results
are available upon request. Contact Esco or your
Esco Sales Representative for details.
4 hours
8 hours
12 hours
16 hours
Contact Time in Hours
Biological Safety Cabinet • Class II, Type A2 Biological Safety Cabinets
20 hours
24 hours
Model LR2 Biological Safety Cabinet Technical Specifications
200 mm
ø 250 mm
ø 9.84"
1440 mm (56.7")
670 mm (26.4")
LR2-3S2/LR2-4S2/ LR2-5S2/ LR2-6S2
1035/ 1340/ 1645/ 1950 mm
762 mm (30")
1. Exhaust H14 filter
5. IV-Bar Retrofit Kit provision
9. Service fixture Retrofit Kit provision
13. Minihelic pressure gauge
2. Blower
6. Electrical outlet Retrofit Kit provision
10. Stainless steel single-piece work tray
14. Operating switches
3. Downflow H14 filter
7. Electrical panel
11. Stainless steel armrest
15. Counter-balanced sash window
4. UV light Retrofit Kit provision
8. Fluorescent lamp
12. Drain valve
16. Thimble exhaust collar (optional)
Optional Exhaust Collar Positions for Thimble-Ducting for LR2 Models
540 mm
330 mm
330 mm
410 mm
Top View -LR2-3S_
Top View -LR2-5S_
620 mm
330 mm
330 mm
476 mm
Top View -LR2-4S_
Top View -LR2-6S_
General Specifications, Labculture Reliant Class II, Type A2 Biological Safety Cabinets
Without Base Stand
1035 x 762 x 1440 mm
(40.8” x 30.0” x 56.7”)
1340 x 762 x 1440 mm
(52.8” x 30.0” x 56.7”)
1645 x 762 x 1540 mm
(64.8” x 30.0” x 60.6”)
1950 x 762 x 1540 mm
(76.8” x 30.0” x 60.6”)
With Optional Base Stand, 711mm
(28") type
1035 x 762 x 2151 mm
(40.8” x 30.0” x 84.7”)
1340 x 762 x 2151 mm
(52.8” x 30.0” x 84.7”)
1645 x 762 x 2251 mm
(64.8” x 30.0” x 88.6”)
1950 x 762 x 2251 mm
(76.8” x 30.0” x 88.6”)
914 x 546 x 650 mm
(36.0” x 21.5” x 25.6”)
1219 x 546 x 680 mm
(48.0” x 21.5” x 26.8”)
1524 x 546 x 680 mm
(60.0” x 21.5” x 26.8”)
1829 x 546 x 680 mm
(72.0” x 21.5” x 26.8”)
0.28 m2 (3.1 sq.ft.)
0.50 m2 (5.4 sq.ft.)
0.63 m2 (6.8 sq.ft.)
0.75 m2 (8.1 sq.ft.)
Tested Opening
203 mm (8.0”)
254 mm (10.0”)
254 mm (10.0”)
203 mm (8.0”)
Working Opening
213 mm (8.4”)
264 mm (10.4”)
264 mm (10.4”)
213 mm (8.4”)
0.35 m/s (70 fpm)
0.35 m/s (70 fpm)
0.35 m/s (70 fpm)
0.33 m/s (65 fpm)
354 m3 / h (210 cfm)
591 m3 / h (350 cfm)
739 m3 / h (438 cfm)
708 m3 / h (420 cfm)
638 m3 / h (382 cfm)
851 m3 / h (509 cfm)
1064 m3 / h (636 cfm)
1204 m3 / h (763 cfm)
354 m3 / h (210 cfm)
591 m3 / h (350 cfm)
739 m3 / h (438 cfm)
708 m3 / h (420 cfm)
Required Exhaust With Optional
Thimble Exhaust Collar
470 m3 / h (277 cfm)
785 m3 / h (462 cfm)
994 m3 / h (584 cfm)
953 m3 / h (561 cfm)
(W x D x H)
Gross Internal Dimensions (W x D x H)
Usable Work Area
Average Airflow
Airflow Volume
0.53 m/s (105 fpm)
ULPA Filter Typical Efficiency
Sound Emission*
>99.999% for particle size between 0.1 to 0.3 microns per IEST-RP-CC001.3
<62 dBA
<63 dBA
<63 dBA
<62 dBA
EN 12469
<59 dBA
<60 dBA
<60 dBA
<59 dBA
Fluorescent Lamp Intensity
> 1076 Lux (> 100 foot-candles)
NSF / ANSI 49 Certified
Work Zone/ Side Walls
Optional Outlets FLA
(110-120V, AC,
60Hz, 1Ø)
1.2 mm (0.05") / 18 gauge stainless steel, type 304, with 4B finish
Cabinet Full Load Amps (FLA)
Electrogalvanized steel with IsocideTM oven-baked epoxy-polyester powder coating
Main Body
Cabinet Nominal Power
Cabinet BTU
Net Weight
Shipping Weight
Shipping Dimensions, Maximum (W x D x H)
Shipping Volume, Maximum
10.2 A
10.3 A
10.4 A
12.5 A
513 W
593 W
789 W
947 W
225 kg / 496 lbs
265 kg / 584 lbs
295 kg / 650 lbs
350 kg / 772 lbs
275 kg / 606 lbs
316 kg / 696 lbs
358 kg / 789 lbs
418 kg / 922 lbs
1150 x 850 x 1900 mm
45.2" x 33.5" x 74.8"
1450 x 850 x 1900 mm
57.1" x 33.5" x 74.8"
1750 x 850 x 1900 mm
68.9" x 33.5" x 74.8"
2050 x 850 x 1900 mm
80.7" x 33.5" x 74.8"
1.86 m³ (66 cu.ft.)
2.34 m³ (83 cu.ft.)
2.83 m³ (100 cu.ft.)
3.31 m³ (117 cu.ft.)
* Noise reading in open field condition/ anechoic chamber.
Accessories for Labculcuture Reliant Class II, Type A2 Biological Safety Cabinets
3ft Stand 28”, = 30” work surface, Leveling Feet, Shipped flat
4ft Stand 28”, = 30” work surface, Leveling Feet, Shipped flat
5ft Stand 28”, = 30” work surface, Leveling Feet, Shipped flat
3ft Stand adjustable from 26” to 37”, work surface 28” to 39”, Leveling Feet, Shipped flat
4ft Stand adjustable from 26” to 37”, work surface 28” to 39”, Leveling Feet, Shipped flat
5ft Stand adjustable from 26” to 37”, work surface 28” to 39”, Leveling Feet, Shipped flat
6ft Stand adjustable from 26” to 37”, work surface 28” to 39”, Leveling Feet, Shipped flat
* Additional voltages may be available; contact Esco for ordering information.
6ft Stand 28”, = 30” work surface, Leveling Feet, Shipped flat
** Inclusive of support
stand, pre-assembled.
Universal Service Fixture Kit, Suitable for Air/Gas/Vac, Field Installed
IV Bar Kit, Includes 6 hooks, Specify model when ordering, Field Installed, Specify Model when ordering
Biosafety Cabinets
Air Quality
Electrical Safety
JIS K 3800, Japan
SFDA YY0569, China
EN 12469, Europe
ISO 14644.1, Class 3, Worldwide
JIS B9920, Class 3, Japan
JIS BS5295, Class 3, Japan
US Fed Std 209E, Class 1 USA
EN-1822 (H14), Europe
UL-61010-1, USA
CAN/CSA-22.2, No.61010-1
EN-61010-1, Europe
IEC 61010-1, Worldwide
Biological Safety Cabinet • Class II, Type A2 Biological Safety Cabinets
Personnel Protection Test
Microbiological Testing
Esco performs testing in accordance
with more than 10 of the world’s most
recognized standards for local, regional
and international criteria. Testing in our
microbiology laboratory is conducted
according to NSF / ANSI 49, JIS K 3800 and
EN 12469. An NSF-accredited biohazard
cabinet field certifier is available in-house
full-time to supervise all testing work.
Harmless Bacillus Subtilis bacteria is used
to challenge the cabinet, then incubated
for 48 hours and the Colony Forming Units
(CFU) are counted to determine the testing
results. Increased microbiological challenge
tests with objects inside the cabinet work
zone, Bunsen burner, external airflow
disturbance, and Human-As-Mannequin
test adapted from Fume Hood development
were performed to simulate real-world
Personnel Protection Test
The test objective is to evaluate the safety
of the cabinet for the personnel operating
on potentially hazardous samples in the
cabinet workzone.
• A nebulizer containing 55 mL of 5 to 8
x 108 spores/mL B.atrophaeus spores is
placed inside the workzone, 10 cm (4
inches) behind the front opening sash.
Product Protection Test
Cross Contamination Test
• Target slit air samplers and impingers are
placed outside the workzone to capture
possibly escaping B.atrophaeus spores,
then the sample is incubated
• Target agar plates are placed 36 cm
(14”) away from the same side wall
• Acceptance: The number of Bacillus
Subtilis CFU recovered from the agar
plates shall not exceed 10 CFU per test.
Product Protection Test
The test objective is to determine cabinet
protection to the product/samples inside
the cabinet workzone from environmental
• A nebulizer containing 55 mL of 5 to 8
x 106 spores/mL B.Subtilis is placed at 10
cm (4 inches) in front of sash window.
• Target agar plates are placed throughout
the entire work surface.
• Acceptance: The number of Bacillus
Subtilis CFU recovered from the agar
plates shall not exceed 5 CFU per
Cross Contamination Test
The test objective is to evaluate cabinet
protection from cross contamination of
samples placed simultaneously inside the
• A nebulizer containing 55 mL of spores
(5 to 8 x 104/mL) is placed against one
of the workzone sidewalls.
• Acceptance: The number of Bacillus
Subtilis CFU recovered on agar plates
shall not exceed 2 CFU per test.
HPV Test Compliant:
Safer Hydrogen Peroxide
Decontamination Compatibility
Esco biological safety cabinets are
Hydrogen Peroxide Vapor (HPV) compliant
and decontaminatable cabinets tested
with both BIOQUELL and STERIS
patented processes. HPV is a safer and
more efficient alternative to conventional
decontamination using formaldehyde
• HPV is non-carcinogenic and odorless,
while formaldehyde is carcinogenic,
toxic and has pungent smell.
• If there is a gap on the cabinet sealing,
escaping HPV to the lab will decompose
to become oxygen and water. Escaping
formaldehyde, however, is harmful
to people in the lab. Therefore HPV
decontamination can be performed
while people still working inside the lab,
while formaldehyde decontamination
must be performed with no one present
in the lab. The HPV method improves
safety, productivity, and reduces the
time to seal the cabinet.
Comprehensive Performance Testing At Esco
Every Labculture Reliant LR2 model manufactured by
Esco is individually tested, documented by serial number
and validated with the following test methods.
Inflow / downflow velocity
PAO aerosol challenge for filter integrity
Airflow pattern visualization
Electrical safety to IEC 61010-1
Additional microbiological testing is performed
on statistical sampling basis.
• HPV biological efficacy is independent
of environmental variables, whereas
formaldehyde efficacy is dependent on
such variables.
• HPV has a better penetration capacity,
resulting in a full decontamination of
the cabinet. The formaldehyde method
is known to result in incomplete
• HPV is more effective and rapid against
biological organisms compared to
• HPV requires approximately 4-7 hours for
set-up, decontamination, and tear-down,
compared to a total of 12-15 hours
needed to complete a formaldehyde
decontamination process.
• HPV decontamination effectiveness
is independent of temperature and
humidity. Formaldehyde requires
temperature above 20°C and relative
humidity above 65%.
• For information on the BIOQUELL and
STERIS HPV methodologies, contact
Esco or your Sales Representative and
ask for our HPV Decontamination
Purchase Specifications
LR2 Series Class II, Type A2 Biological
Safety Cabinet
General Performance and Certifications
1. The biological safety cabinet shall comply with NSF
/ ANSI 49 (USA) standard, and the manufacturer
shall provide a certified copy of performance tests
equivalent to or greater than specified in NSF /
ANSI 49.
2. The cabinet shall protect (a) the operator and
laboratory environment from particulates
generated within the work zone; (b) the product
and process within the work zone from airborne
contamination from ambient air; (c) and the
product and process within the work zone from
cross contamination.
3. Microbiological testing for cabinet performance
shall be performed on a statistical sampling basis.
4. Each cabinet are listed by Underwriters’
Laboratories (UL, cUL) or CE for electrical safety.
5. Original documentation specific to each cabinet
serial number shall be provided with the cabinet
and maintained in the manufacturers’ records.
Test data verifying all performance criteria shall be
available upon request to include: (a) inflow velocity
through direct inflow measurement method; (b)
downflow velocity and uniformity; (c) filter leak
scan with aerosol challenge for both filters; (d)
light, noise, vibration; (e) and electrical safety.
Filtration System
6. The cabinet shall have one supply downflow filter
and one exhaust filter. Both filters shall be ULPAtype per IEST-RP-CC001.3 and meet EN 1822
(H14) requirements.
7. The filters shall be within an aluminum frame with
mini-pleat design without aluminum separators;
no wood or fiberboard shall be used in the filter
8. Typical filter efficiency shall be 99.999% at 0.1 to
0.3 microns.
KI Discus Containment
Test According to EN 12469
(Potassium Iodide)
Esco is currently one of the few companies
in the world equipped to perform the KI
Discus test for our customers. The KI Discus
test is defined in the European Standard for
microbiological safety cabinets, EN 12469,
as a test method for validating the operator/
personnel protection capabilities of the
9. An integral filter guard shall be affixed to prevent
damage to the filter media.
10.The filters shall be (a) individually scan tested by
the manufacturer, (b) individually scan tested
after assembly, and (b) easily accessible for
scan testing in situ by means of a dedicated
upstream sampling port accessible from within
the cabinet.
11.The supply filter shall be angled and oriented to
the 5° cabinet front angle to maximize downflow
uniformity over the work surface.
12.A removable, perforated metal diffuser shall
be installed below the supply filter to optimize
airflow uniformity and to protect from damage.
• The KI Discus test shows excellent
correlation with the microbiological
test method for operator protection,
and is useful for validating the actual
containment performance of the
cabinet on-site.
Blower System
• The KI-Discus takes only 45 minutes as
opposed to 2 days for microbiological
15.The blower/motor shall be able to compensate
for filter loading.
• Thus, Esco Labculture LA2 models
are factory tested on sampling basis
using the KI Discus method for
operator safety.
13.The cabinet shall have a direct drive, permanently
lubricated centrifugal blower/motor dynamically
balanced in two planes compliant to ISO2710 for
low noise, low vibration and long filter life.
14.The blower/motor shall have an external rotor
design and include an automatic thermal cut-out
to disable the motor in case of overheating.
16.The blower/motor system shall be enclosed
within a dynamic chamber shaped steel plenum
and integrated with the removable supply filter
assembly to simplify filter changing.
17.The integral damper shall be externally adjustable.
Biological Safety Cabinet • Class II, Type A2 Biological Safety Cabinets
Cabinet Design, Construction, Cleaning
18.The cabinet shall be of double wall design
whereby all positive pressure plenums capable
of handling contaminated air shall be surrounded
by negative pressure. No positive pressure areas
shall be accessible external to the cabinet.
19.The cabinet shall maintain containment
performance even when removable work area
components are removed for cleaning.
20.The work tray shall be one-piece, removable,
stainless steel with radius corners without crevices
or joints.
21.The cabinet shall have a stainless steel, onepiece fabricated drain trough with open angles
to channel spills to a common drain.
22.The closed sidewall shall be sealed without
perforations, return air slots or concealed areas
which can contain contaminants.
23.The cabinet shall be free of sharp edges, nonfunctional protrusions, bolts, screws or hardware,
and all metal edges shall be deburred.
Ergonomics and Convenience
24.The front sash shall be frameless to maximize
visibility, and accessible for cleaning front and
back. Sash glass shall be safety glass.
25.The sash counterbalance shall be suspended on
two high-strength cables, and the sash shall lock
into position in the event one cable becomes
26.Magnetic, not mechanical, proximity sensors shall
work in conjunction with the control system to
indicate proper sash position for containment.
27.Fluorescent lamps shall be mounted behind the
control panel module out of the work zone.
Electronic ballasts shall be used to eliminate flicker,
extend lamp life and reduce heat output.
28. The cabinet shall be designed with a 5° angled
front to optimize user comfort, reduce glare and
maximize reach into the work area.
29.Penetrations for petcocks and service fittings
shall be provided; penetrations shall be offset to
improve user access.
30.The cabinet shall accommodate an standard
mounting stand for fixed-height or optional
height configurations.
Certification, Service and Decontamination
31.The cabinet shall be approved for both hydrogen
peroxide vapor (HPV) and formaldehyde
decontamination protocol.
32.All panels leading to potentially contaminated
and/or hazardous areas shall be color coded red.
33.All components with the exception of blower/
motor and ULPA filters shall be located outside
of contaminated air spaces to facilitate servicing
without the need to decontaminate the cabinet.
34.All exterior surfaces shall be painted with a
permanent antimicrobial inhibitor coating to
minimize contamination.
35.Each cabinet shall undergo the following tests in
the factory.
- Inflow/ downflow velocity
- Filter leaks test
- Electrical safety to IEC 61010-1
- KI-Discus containment
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.
9010006_Biological Safety Cabinet_LR2_Brochure_A4_vB_08/11
Esco can accept no responsibility for possible errors in catalogues, brochures and other printed materials. Esco reserves the right to alter its
products and specifications without notice. All trademarks and logotypes in this material are the property of Esco and the respective companies.
Biological Safety Cabinets and Laminar Flow • Laboratory Fume Hoods • Laboratory Ovens
Laboratory Incubators • PCR Thermal Cyclers • Microplate Shaker/Incubators • Ultralow Freezers
Esco Technologies, Inc. • 2940 Turnpike Drive, Units 15-16 • Hatboro, PA 19040, USA
Toll-Free USA and Canada 877-479-3726 • Tel 215-441-9661 • Fax 215-441-9660 • [email protected]
Esco Micro Pte. Ltd. • 21 Changi South Street 1 • Singapore 486 777
Tel +65 6542 0833 • Fax +65 6542 6920 • [email protected]
Esco Global Offices | Beijing, China | Kuala Lumpur, Malaysia | Manama, Bahrain | Guangzhou, China |
Hanoi, Vietnam | Marietta, OH, USA | Melaka, Malaysia | Mumbai, India | Philadelphia, PA, USA |
Salisbury, UK | Shanghai, China | Seoul, Korea | Delhi, India | Singapore
escoglobal com
Esco Micro Pte Ltd
Cert. No: 651076
PT Esco Bintan Indonesia
Cert. No: 651333/E
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