Item Description: Gastec Tube 120 - Aromatic Hydrocarbons (0.4 to 200 ppm)
Box contains 10 detector tubes. Primary measurement range is 2 to 100 ppm. Range can be extended to 0.4 to 2 ppm with a correction factor of 1/2 to 1.5 and 2 to five pump strokes, or to 100 to 200 ppm with a correction factor of 2 and 1/2 pump stroke. Box contains complete instructions.
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