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Is My Drywall Chinese? - HB Litigation Conferences

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Field Sampling and Analysis Methods<br />

Jerome H2S Sensor<br />

Sensitivity: 3 ppbv<br />

Interferences: Organosulfurs<br />

No response: OCS, CS2<br />

Tedlar Bag Chamber<br />

Imperfect and Incorrect<br />

Sampling Methods<br />

Tedlar bag—RSC stable,<br />

but for short period.<br />

About the only way for<br />

remote laboratory<br />

analysis<br />

DO NOT USE STAINLESS STEEL<br />

CANISTERS FOR H2S—IT IS LOST<br />

WITHIN MINUTES. Silco canisters—<br />

glass‐lined—can work if new. Old<br />

canisters have inconsistent<br />

performance. COS, CS2—possibly, but<br />

inadequate data.<br />

6/23/2009<br />

7

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