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238 in stock (can be backordered)
Free Chlorine 0-10 ppm, Bromine 0-20 ppm, Total Alkalinity 0-240 ppm, pH 6.2-9.0 Total Hardness 0-800 ppm.
This test strip is a dip-n-read strip with instant results. The bottle has a moulded desiccant liner, which protects the strips from moisture and UV light. Each bottle includes 50 test strips.
The Insta-TEST® 4 strip is ideal for spa owners who need the most critical tests for perfect water balance.