Lot Variability of Sofnolime 408 Carbon Dioxide Absorbent When Tested in the Cold
Technical rept. Jun-Aug 98
NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL
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NEDU performed quality assurance tests on 18 lots of Sofnolime 408, a large grain sodalime made by Molecular Products. CO2 absorption activity using the standard NATO tubs test was performed at initial absorbent bed temperatures of approximately 32 deg F. Moisture analyses and sieve tests were also performed on each sample. Absorption test breakthrough in the chilled bed occurred at an average of 7 min, compared to the usual 40 min duration under ambient conditions. Absorption activity was negatively correlated with increasing moisture content, and positively correlated with an increasing percentage of absorbent retained on the 8 sieve.
- Inorganic Chemistry
- Life Support Systems