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24939

Supelco

Purge/Trap J BTEXTRAP

for use with OI Analytical Eclipse 4660, 4560

Synonym(s):

PURGE TRAP J, O.I. ANALYTICAL 4560

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About This Item

EC Number:
UNSPSC Code:
41115700

application(s)

environmental

compatibility

for use with OI Analytical Eclipse 4660, 4560

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General description

Tubes used in purge and trap analyses generally are packed with multiple beds of adsorbent materials, so that a broad range of polar and nonpolar, high and low molecular weight compounds can be trapped in a single tube. Each bed protects the next, increasingly active bed, by preventing compounds from being held so strongly that they cannot be desorbed quickly without decomposition. During the purge phase of sampling, lower molecular weight compounds pass through the initial adsorbent beds but are trapped by succeeding beds. During desorption, the carrier gas passes through the trap in the reverse direction of purge flow, so that higher molecular weight compounds never come in contact with the stronger (innermost) adsorbents.

Legal Information

BTEXTRAP is a trademark of Sigma-Aldrich Co. LLC

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable


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