Types of Laboratory Hoods and
Specific Uses
Horizontal Laminar Flow Cabinets
SHC-A
AHC-A
Vertical Laminar Flow Cabinets
SCV-A
AVC-A
Class II Type A2 Biosafety Cabinets
AC2-E
LA2-A
AC2-S
Class II Type B2 Biosafety Cabinets
AB2-S
LB2-B
Laminar Flow Cabinets
Airstream Horizontal D Series
AHC-D
•Digital display
•Airflow alarm system
•Isocide
•Spillage Retaining Work
Surface
•Sloped Front
•Glass Sides
Airstream Vertical D Series
NEW
AVC-D
•Digital display
•Airflow
•Isocide
•Spillage Retaining Work
Surface
•Sloped Front
•Glass Sides
AHC-D/AVC-D Product Features
NEW
Biosafety Cabinets
Different Types of BSCs
 Class II Type A2
- Re-circulating air
- No ducting needed
- Alternative Thimble Ducting
 Class II Type B2
- Total exhaust (100%)
- Ducting required
- Suitable for fumes
Labculture Plus S Series
LP2-S
•Reduced height, depth
•Low Noise Level
•Motor Voltage Stabilizer - Accuflow
•Motorized window standard
•Multiple work tray
•Large LCD screen
•3 degree Sloped Front
•Western European style
Sentinel Gold versus Sentinel Controller
NEW
Video Presentation:
Working Safely in a BSC
Animal Containment Workstation
Viva® Dual Access Animal Containment Workstation
Viva® Dual Access Animal Containment Workstation
VDA
•Only for cage changing
•Available in 4ft size
•Pharmaceutical
•Universities
•Research Institutes
•Animal Breeding Centers
Viva® Universal Workstation
Viva® Universal Workstation
VA2
• Class II airflow: product
and user protection
• Optional height-adjustable
stand
• General animal
procedures especially
those requiring biohazard
protection
VA2 vs LA2
Product Name
VIVA® Universal
Workstation
(VA2)
Labculture Class II,
Type A2 Biosafety
Cabinet (LA2)
Disposable pre-filter
Yes
Not applicable
Activated carbon filter
Yes
Not applicable
305 mm
218 mm
Working Opening
Viva® Bedding Disposal Workstation
Viva® Bedding Disposal Workstation
VBD
•Only for bedding disposal
•Motorized stand standard
•Rubbish Bin
•Pre Filter
•Carbon Filter
•Operator protection only
Viva Animal Containment Workstations
Product Name
Primary Application
Allergen Control
VIVA Dual Access
Workstation (VDA)
Cage changing
Yes
VIVA Universal
Workstation (VA2)
Research procedures,
Cage Changing
Yes
VIVA Bedding
Disposal Workstation
(VBD)
Bedding disposal from
soiled cages after
changing
Yes
Hospital Pharmacy Isolators
Hospital Pharmacy Isolator – Positive Pressure
NEW
HPI-P
•USP797 compliant
•Product protection
•Neoprene gloves
•Stainless Steel Interior
•Easy to clean
•Sloped front
Hospital Pharmacy Isolator – Positive Pressure
NEW
HPI-P
•Airlock pass through
•Optional motorized stand
available
•Built-in Sharps disposal
containers upgrade
Hospital Pharmacy Isolator – Seminar
 Venue: Esco Singapore Headquarters
21, Changi South Street 1
Singapore 486777
 Date: 25th September 2008
 Time: 2.30pm-5.30pm
All are invited.
Cabinets for Chemotheraphy Drug Handling
Hospital Pharmacy Isolators – Negative Pressure
Cytotoxic Safety Cabinets
Class II Type B2 Cabinets
Cabinets for Chemotheraphy Drug Handling
LB2-B
CYT-A
HPI-N
Ducted & Ductless Fume Hoods
What are Fume Hoods?
- Primary control device for protection of lab personnel from exposure to
toxic chemicals
- Partially enclosed workspace that is exhausted to the outside of the
building
- Suctions relatively high air flow through the front opening and
exhausting hazardous pollutants out of the laboratory, where it will be
infinitely diluted in the atmosphere
Basic Features
1. Bypass
2. Baffles
3. Sash
4. Airfoil
Basic Features
Bypass – Openings on the hood body above
the sash. As the sash is lowered, the openings
are gradually opened such that there is inflow of
air to compensate for the shrinking of the sash
opening.
Baffles -- Partitions used to create slotted
openings along the back of the hood body. Baffles
keep the airflow uniform across the hood opening,
thus eliminating dead spots and optimizing
capture efficiency.
Basic Features
Sash
- The sliding “door” to the hood. The sash
should be held in a low position (around 20
inches) when working in the hood and closed
completely when the hood is not in use.
- The sash may be temporarily raised above
this position to set up equipment, but must be
returned to the optimum sash height setting
prior to generating contaminants inside the
hood.
Basic Features
Airfoil
- Located along the bottom and side edges the
airfoil streamlines airflow into the hood
- Prevents creation of turbulent eddies that can
carry vapors out of the hood
- Space below the bottom airfoil provides
source of room air for the hood to exhaust when
the sash is fully closed
Design Styles
Constant Volume Bypass System
- Volume of airflow into hood remains more or less constant. As the sash is
closed the airflow velocity into the hood increases.
- Air bypass incorporated above sash provides additional source of room
air, reducing the rate of increase of face velocity as sash is lowered.
Design Styles
Variable Air Volume Hoods
- Most sophisticated of the hood types, requiring technically proficient
design, installation and maintenance
- Maintains a constant face velocity as sash height changes, safe and
energy-efficient
- Tracks the makeup air to the total exhaust by means of multiple dampers
Safety Essentials
Safety Essentials
 Fume hood is not a storage!
 Always keep fume hood
clean and clear.
 Action must be taken
immediately if spillage
happen.
Safety Essentials
Safety Essentials
 Raise bulky equipment 1-2 inch off the work surface.
 Place bulky equipment towards the rear of hood and away
from the side walls.
Safety Essentials
Safety Essentials
 Keep sash as low as possible when conducting experiment.
 Do not block the airfoil.
 Reduce pedestrian traffic in front of the hood
 Minimize rapid movement in front of hood.
 Always keep laboratory windows and doors closed.
Safety Essentials
Safety Essentials
 Do not use a hood for any function for which it was not intended.
 Certain chemicals or reactions require specially constructed
hoods.
 Perchloric acid hoods shall be made of stainless steel and
equipped with a wash down system.
 Polycarbonate sash shall be applied when using hydrofluoric
acid.
 Work involving harmful micro-organisms should be done in a
biosafety cabinet, rather than a chemical fume hood.
 Close the sash when finished hood work or leaving experiments
or chemicals unattended.
Video Presentation:
Fumehood Testing
Q&A
Thank You