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A calibrated, glass gas detector tube for use with GASTEC Air Sampling Pump Kit (item #653091). Color change inside the tube allows students to read the gas concentration directly from the tube wall. Range is 7 to 23%. Box of 5.
Note: Use this gas detector tube only with the GASTEC Air Sampling Pump Kit (item #653091), which is able to collect 10 mL of air (or other gas sample).
If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.
