Chlorine Test Strip, 300ppm

The Chlorine 0-300ppm test strip provides an easy way to accurately measure Free Chlorine in increments of 0, 25, 50, 100, 200, and 300ppm. This test strip produces a distinct color change over the entire range from blue to brown to orange. This is a great alternative to our Chlorine Test Paper as it is a more accurate measurement of free chlorine. Our Chlorine test paper is only a semi-quantitative measurement, meaning it changes darker shades of one color (purple). This is almost identical to our Mid-Level Chlorine 0-200ppm test strip with one extra increment.

SKU: SKU: CHL-300 Categories: ,


  1. Immerse the test strip in the sample and remove immediately.
  2. Hold strip level (do not shake off excess sample).
  3. Compare to the color chart between 5 and 10 seconds after removing the strip from the sample.


Vial Dimensions: 1.375″ (D) x 3.25″ (H) [35mm (D) x 83mm (H)]
Strip Dimensions: 2.5″ (L) x .1875″ (W) [64mm (L) x 5mm (W)]
Shelf-Life: 2 Years
Item #: CHL-300-1V-100 (1 vial, 100 strips/vial)