Item Description: Gastec Tube 1LA - Carbon Monoxide LR (8-1,000 ppm)
Measuring range is 25 to 100 ppm. Range can be extended to 8 to 12.5 ppm with 3 pump strokes and a correction factor of 1/3, to 12.5 to 25 ppm with 2 pump strokes and a correction factor of 1/2, and to 500 to 1000 ppm with 1/2 pump stroke and a correction factor of 2. Box contains complete instructions.
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