药典，食品级氮气，氧气分析：
氢，氧，氮，一氧化碳，甲烷的分离

名称：5A分子筛
规格：4m*1/8
粒度：60-80
应用：H2.O2.N2.CO.CH4的分离
Pharmacopoeia, Food Grade Nitrogen, Oxygen Analysis:

Separation of hydrogen, oxygen, nitrogen, carbon monoxide, and methane



Name: 5A molecular sieve

Specification: 4m * 1/8

Particle size: 60-80

Application: Separation of H2.O2.N2.CO.CH4