Bucket Technology
Designed to function like the Summa canisters used by government and industry, the buckets used in a Bucket Brigade are far cheaper and have comparable results. Air is drawn into a Tedlar bag housed inside a five gallon bucket. The bag is sealed and sent to a laboratory for analysis. The bag's contents are analyzed using Gas chromatography-mass spectrometry (GC-MS) and compared to a library of toxic gases. While the buckets cost only $75 each, the GC-MS samples cost $500.
Read more about this topic: Louisiana Bucket Brigade
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