Labconco Protector Demonstration Hoods 3945021 - Manual (Page 22)

Chapter 4: High Performance Features and Safety Precautions
Product Service 1-800-522-7658 18
3. Upper Dilution Air Supply provides bypass air from above the work
area. This feature constantly bathes the sash interior with clean air and
reduces powders and chemical fumes along the sash plane, near the
critical breathing zone. Five to seven percent of the required air
volume is introduced through the upper dilution air supply to ensure
maximum containment. Additionally, the upper dilution air supply
reduces stagnant pockets of air in the upper interior. See Figure 4-4.
4. Visible Clear Rear Baffle directs air streams to the baffle in a single
pass. The baffle and rear panel are manufactured from framed glass
panels to provide maximum visibility on all sides. This smooth flow
minimizes the potential for air to roll forward preventing
contamination from moving toward the sash opening. The
concentrations of materials are largely removed on the first pass
through the contaminated chamber.
5. Side Entry Air Foils allow turbulence-free air to enter the hood from
the sides and allow clean air to sweep the interior walls.
6. Ergonomic Slope provides maximum visibility, and comfort reduces
glare, thereby minimizing operator fatigue.
7. Internal Depth of 23" provides necessary space to support
equipment without extending outside the hood or resting on the lower
air foil.
8. Two Heights available as standard enclosures in 22.75" or 32".
Taller height Demonstration Hoods are typically used for pipet
operations, titration or taller auxiliary equipment.
9. Unique Flush Sash with Spring-Loaded Latch has a wiping seal to
contain contaminants and features a spring-loaded latch for loading
auxiliary equipment. The sash pivots down for normal operation.
Figure 4-4