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Northstar SP4000 High Performance
Compares to BioGuard Balance Pak 100
Nautilus Plus NS24
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AquaChek 521252A 4-in-1 Total Bromine Red Test Strips - 50 Count Northstar SP4000 High PerformanceIdeal for customers who use bromine as a sanitizer in their spa or pool. Includes a 4th test for Total Hardness as low levels can cause significant damage to metal pipes & fixtures, as well as plaster. Get test results for 4 important chemistries in seconds: Total Bromine, pH, Total Alkalinity, and Total Hardness. Works in spas and pools equipped with sodium bromide generators.
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