Traps for Volatile Organic Sampling Trains (VOST)

Volatile organic sampling trains (VOSTs) are specified by U.S. EPA Method 0031 in SW-846 for sampling VOCs in gaseous effluent from stationary emission sources such as hazardous waste incinerators. SKC VOST traps met method specifications. SKC VOST traps are tested for background and pressure drop and feature Swagelok fittings and PTFE ferrules. Traps supplied are not thermally conditioned.

Method 0031 calls for three sorbent tubes:

• One Anasorb 747 sorbent tube (SKC Sorbent tube 226-133)
• Two Tenax sorbent tubes (SKC Sorbent tube 226-134)

Because of their low background levels, these specified sorbents are useful for collecting low concentrations of VOCs.

Ordering Information    

Applications	Sorbent Amount	Description Size (mm) OD x L	Qty.	Cat. No.
EPA 0031	Anasorb® 747 (20/40 Mesh) 5 gm Limited shelf-life; contact SKC for more information	Glass, open 16 x 125	1	226-133
EPA 0031	Tenax TA (35/60 Mesh) 1.6 gm Limited shelf-life; contact SKC for more information	Glass, open 16 x 125	1	226-134
Research	Anasorb 747 / Tenax TA (20/40 Mesh) / (35/60 Mesh) 5.2 gm / 1.2 gm Limited shelf-life; contact SKC for more information	Glass, open 16 x 125	1	226-171
Accessories
Replacement PTFE ferrules, set of 2				P226133
Replacement Swagelok fittings, stainless steel, set of 2				P226134

Note:	VOST tubes must be conditioned prior to use; use and analyze within 14 days of conditioning
Note:	EPA methods allow some flexibility accommodating similar sampling protocols, however, such flexibility places documentation responsibility on the user. For a detailed explanation, refer to the method.

Custom Tubes & Repacking Available
For specific applications, SKC makes custom environmental sorbent tubes to meet your specific requirements. Contact your SKC representative for more information.

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This page was last modified March 15, 2010