Labconco AtmosPure Re-Gen Gas Purifiers 5121845 - Manual (Page 36)

Chapter 5: Using Your Gas Purifier
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
Perform evacuation and fill cycle on the transfer chamber of the glove
box using the vacuum outlet and gas inlet valves. Depending on the
vacuum level achieved, it takes 1-5 cycles to reduce oxygen and
moisture levels below 1%. Porous materials being transferred may
require longer sustained vacuum evacuations to remove the oxygen
and moisture trapped in the materials.

In order to achieve the lowest oxygen and moisture levels in a glove
box, perform the required evacuation and fill cycles on the main
chamber using the vacuum outlet and gas inlet valves. To automate
the evacuation and fill cycles (1-499) for both glove box chambers,
the addition of the Automatic Pressure Controller (5238600 or
5238601) is recommended (see Chapter 7) or use a Protector
Controlled Atmosphere Glove Box with Auto Pressure Control.
Normally 75-100 evacuation and fill cycles will reduce moisture and
oxygen levels below 1%. An additional 100 cycles will reduce
moisture and oxygen levels below 0.3% or 3,000 ppm. The
AtmosPure Gas Purifier blower can now be turned on. The use of
external glove port covers will expedite the evacuation and fill
cycle time and help maintain low moisture and oxygen levels
when the glove box is not in use.

Maintaining a -1" to +1" water gauge pressure difference can help to
preserve the glove box atmosphere.

The AtmosPure Re-Gen Gas Purifier is required to maintain oxygen
and moisture levels below 0.3%-0.5%. Turn the Gas Purifier blower
on to start circulation and reduce oxygen and moisture. Labconco
AtmosPure Re-Gen Gas Purifiers can maintain oxygen levels
below 1 ppm and moisture levels below
1 ppm depending on liner material and applications.

Monitoring moisture and oxygen levels inside the glove box is
recommended by using accessory monitors (see Chapter 7).

The Gas Purifier catalysts will last for 1-3 months before requiring
regeneration. See Chapter 3 for instructions to start regeneration.
Work Techniques

Maintain work at a slightly negative pressure if working with
hazardous compounds.

Continuously run the Gas Purifier blower to preserve the inert
atmosphere if so desired.