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Guardex / Pentair 4 in 1 test kit

Guardex / Pentair 4 in 1 test kit

Rainbow/Guardex 4 in 1 Combination Swimming Pool Test Kit.

Rainbow Guardex Test Kit – The extremely accurate liquid reagent system from Pentair – previoulsy known as Guardex.

Rainbows Guardex Style 4-in-1 test kits have been the standard of the industry for decades. 4-in-1 tests for chlorine/bromine/pH, alkalinity and acid demand.

This particular swimming pool test kit is able to test both free and total chlorine levels.

Replacement reagents are also available on

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