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Note: This is a "Special Order" product that cannot be exchanged and is non-returnable
The Honeywell Water Vapor Tubes have a standard range of 6 - 40 lbs/MMCF (0.1 - 0.64 mg/L) for a single stroke using the Honeywell Piston Hand Pump and an extended range of 3 - 80 lbs/MMCF for additional strokes. Sold in boxes of 10 tubes.