Gas Requirements and Purity
Improper handling, disposing of, or transporting potentially hazardous materials can cause serious bodily harm or damage the instrument. Always refer to the MSDS when handling hazardous materials. Safe operation and handling of the instrument, supplies, and accessories is the responsibility of the operator. |
Compressed gases are required for analyses. Gas cylinders or an outlet from a central source should be located near the analyzer.
Appropriate two-stage regulators which have been leak-checked and specially cleaned are required. Pressure relief valves should be set to no more than 30 psig (200 kPag). All gases should be of a purity listed below. Gas regulators can be ordered from Micromeritics. Parts and accessories can be found online at www.Micromeritics.com.
When helium is used for differential free-space measurement and nitrogen is used as the adsorbate gas, they should be of the following purity or better:
- Helium — purity of 99.9%. For analysis of materials with very low surface areas, Micromeritics recommends use of helium with purity of 99.995%. (CGA 580)
- Nitrogen — purity of 99.9%. For analysis of materials with very low surface areas, Micromeritics recommends use of nitrogen with purity of 99.995%. (CGA 580)
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