Page 203 - Shimadu Consumables Catalog

Molecular Sieve 5A / 13X

Molecular sieve packed columns easily separate permanent gases at above-ambient temperatures. The two most common molecular
sieves used are 5A and 13X.
Molecular sieve 5A and 13X packings differ in pore size and composition, causing differences in retention and selectivity for
many gases. The 5A packing provides greater retention, which improves the separation of argon, oxygen, and nitrogen, and is
a better choice for analyzing the trace impurities in inert gases typically used in the semiconductor industry. The 13X packing
often is preferred for analysis of carbon monoxide, particularly at trace concentrations, because lower retention results in sharper
chromatographic peaks and improved detection limits.

Molecular Sieve Packed Columns

Molesieve OD ID / mm Mesh Length / m
1.0
Molesieve 5A 60/80
Molesieve 13X 1/8” 2.1 80/100 2.0
3.0

Molecular Sieve Micropacked Columns

Molesieve OD ID / mm Mesh Length / m
Molesieve 5A 1.0
Molesieve 13X 1/16” 1.0 80/100 2.0

Molecular Sieve 5A and 13X are available in both stainless steel and glass column.
For availability and ordering information on custom columns, please contact your representative direct sales/distributors.

Pg C-53