The bottle has a molded desiccant liner, which protects the strips from moisture and UV light. The Insta-TEST® 4 Plus strip is ideal for spa owners who need the most critical tests for perfect water balance. This product can be purchased with English only text or trilingual (English, Spanish, French) instructions.

-Free Chlorine 0-10 ppm

-Bromine 0-20 ppm

-Total Alkalinity 0-240 ppm

-pH 6.2-9.0

-Total Hardness 0-800 ppm