24938

Purge/Trap I Vocarb^® 4000

for use with OI Analytical Eclipse 4660, 4560

• Synonym(s): PURGE TRAP I, O.I. ANALYTICAL 4560
• UNSPSC Code: 41115700

Properties

• Agency: suitable for EPA 601
• Quality Level: 100
• application(s): environmental
• compatibility: for use with OI Analytical Eclipse 4660, 4560

Description

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.

Application

Purge/Trap I Vocarb^® 4000 may be used as a purge and trap system in the gas chromatographic analysis of volatile organic compounds.

Legal Information

Vocarb is a registered trademark of Siemens Industry, Inc.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable