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The K-7404 ozone analysis kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, and instructions.
Catalog No. R-7404
Catalog No. C-7404
Catalog No. C-7405
Catalog No. A-0013
Catalog No. A-2500