Item Description: Gastec Tube 191L - Acrylonitrile LR (0.1-18 ppm)
Box of 10 tubes contains 5 detector tubes and 5 pretreatment tubes. The tubes connect with a rubber yoke (included) for testing. Box yields 5 tests. Measuring range is 0.2 to 6 ppm. Range can be extended to 0.1 to 0.2 ppm with 4 pump strokes and a correction factor of 1/2, and to 6 to 18 ppm with 1 pump stroke and a correction factor of 3. Box contains complete instructions.
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