Freshwater™ MPS Test Strips *measures oxidizer levels Cover Accessories Please be aware that if

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Freshwater™ MPS Test Strips *measures oxidizer levels Cover Accessories Please be aware that ifThe Freshwater MPS Test Strips monitor the level of oxidizer (MPS) in your spa. Contains 50 test strips Measures: Oxidizer MPS (monopersulfate) Alkalinity pH MPS test strips can be used in the following water systems: Freshwater & Ace Cell Saltwater Systems Silver Ion & Granulated Chlorine Bromine Floater Tabs Did You Know? Non chlorine shock, oxidizer and MPS are all names that refer to the same product spa oxidizer.