Jul 18, 2002 · 8.2.3 Before the sample is added to the cell, the sample must be dried. The sample is dried by adding pre-cleaned Hydromatrix. The amount of this drying agent being used depends on how much water is in the sample. The more water present in the sample, the more drying agent will be needed to dry the sample.
The more the sample stream is agitated or exposed to the air during the transfer of sample from the bailer to the vial, the lower the concentration detected in the vial will be. The greatest loss of VOC's occurs when the sample is simply poured into the vial through the top of the bailer. Bottom emptying bailers with too rapid a flow also cause
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