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USER MANUAL | ICOS | INSTRUCTIONS | UM/ICOS-EN REV. B.2
The Pretreatment Box
The pretreatment box dries the sample, so the water concentration is maintained below
500 ppm. The pretreatment box removes ambient CO
concentration is maintained below 500 ppm.
Replace the soda lime filter as needed (normally at six week intervals).
When the LithOlyme® in the canister turns purple, it needs to be replaced.
Figure 12 shows LithOlyme® alternated with Soda Lime in both fresh and depleted
condition.
Figure 12: LithOlyme® (Fresh and Depleted)
and dries the sample, so the water
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