300ppm Free Chlorine

SKU: 33815-300

$8.95USD or lower Each

Save More When You Buy More!
Quantity1+10+ 100+ 
Price for each$8.95USD$8.10USD$7.25USD
Your savings - 9.5%18.99%
[4.8]   2 Reviews    | Write a Review

Fast, accurate free (available) chlorine testing in seconds-simply dip & compare to color chart for readings at 25, 50, 100, 200 & 300ppm for only $8.95 for 100 strips.

Confused about how to dilute? Use our free Chlorine bleach dilution calculator to take out the guesswork.



Use our bleach dilution calculator to take out the guesswork out of trying to calculate how to prepare a 50, 100, 200 (or other) ppm chlorine solutions. 

  • Strips come in desiccant lined bottle for enhanced shelf life
  • If properly stoppered, strips have a minimum 2 year shelf life but easily last 5 years.
  • These strips measure free (available) chlorine
  • The number of strips (100) per vial is approximate.

Test Strip Documentation

Stability Statement Certificate of Analysis
Reviews (2)
I am glad these are packaged in a container; we have had some in the past packaged in a paper envelope (from another company), which is hard to keep dry. They work just as advertised - the only imperfection for us is that the colors are fairly similar and it can be hard to tell at a glance what the result is. Otherwise, great.
— Lettuce
These Chlorine test strips are great when you need to measure Free Chlorine levels in water at high levels of concentration.
— Great product, arrived quickly.
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