The Grab Sampling technique for air toxins, is to take a relatively small sample amount over a certain period of time. The results obtained are usually instantaneous. Once the sample has been collected, it is sent to an accredited laboratory where an analysis is performed to determine the levels of the toxins found.

The most common parameters to be monitored with the Grab Sampling method are:

• Volatile Organic Compounds (VOC’s)
• BTEX (Benzene, Toulene, Ethlybenzene, Xylene)
• Hydrocarbons (C1-C10) and Total Hydrocarbons

TEDLAR BAGS

Tedlar bags are used to collect both volatile and semi-volatile compounds. By means of a pump, 1L and 3L samples can be collected.

SUMMAŽ CANISTERS

SUMMAŽ air sampling canisters are used for collection of ambient air samples. These high purity stainless steel canisters are designed to maintain the integrity and stability of the sample, while it is being transported to a laboratory and stored for future analysis. SummaŽ canisters range in volume from less than 1L to greater than 15L. 6L canisters are generally used for ambient air samples and for collecting samples over a period of time. A flow controller (critical orifices) may be used when collecting a sample over a period of time, up to 24 hours.