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These hydrocarbons gas detector tubes are replacement tubes for use with the Carolina® Exploring Air Pollution Generated by Fossil Fuel Combustion kits. All materials needed to operate the replacement tubes are contained in the kits; these are replacement gas detector tubes only. Pack of 10.
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.