Chapter 2: Prerequisites
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3
Support, Vibration and Preventive Requirements
In the preparation of a glove box site, please consider the following:
A bench or stand that is rigidly mounted to the floor or fixed to the wall,
but not both, may be appropriate. 35" to 40" (889mm to 1,016mm) is
typical for standing height (Labconco stands offered in Chapter 7 vary
from 33" to 40" or 838mm to 1,016mm).
The corners of a building typically have less vibration than the center,
which promotes analytical balance stability.
The bench typically should not contain any vibration-producing
equipment, such as shakers or pumps.
A marble slab with dampening pads placed within the enclosure is an
effective low cost means of controlling vibration for analytical balance
operation (see
Chapter 7: Accessorizing Your Glove Box
).
Location Requirements
The Precise Glove Boxes have been designed to rest on a typical 29"-30"
(737mm-762mm) deep work surface. The height should be 35"-40" for
standing position. Avoid placing the glove box in high traffic areas where
walking might disrupt the operator or experimentation.
Exhaust Requirements for the Pressure Relief
Valve
To prevent over or under pressurization of the main glove box chamber, the
Precise Controlled Atmosphere Glove Box includes a pressure relief valve
that activates at pressures and vacuums above +6" water gauge or below -6"
water gauge.
WARNING: The overpressurization of air at positive
pressure would allow any contaminants inside the glove
box to vent into the room. To control this venting into the
laboratory, Labconco offers three pressure relief valve
ventilation accessories. All three of these pressure relief
valve ventilation accessories are shown in detail in Chapter
3 and can be ordered from Chapter 7.
Please see Chapter 7 to order the pressure relief valve and other valve
accessories for the Precise Basic Glove Box.
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