Buy Indigo™ residual chlorine chlorine test strips for only $21.95 /100 strips; buy more & and save with our extended shelf life. Measure free (available) chlorine levels 0 & 10ppm in drinking water or for organic food certification.
Confused about how to dilute? Use our free Chlorine Bleach Dilution Calculator to take out the guesswork.
Indigo™ brand chlorine test strips are Made in USA & tested for accuracy using NIST compliant standards.
They are ideal for anyone who is concerned about detecting trace (residual) levels of free chlorine to meet USDA or California organic certification regulations
The strips are very easy to use. Simply place a drop of water on the indicator pad of the test strip and then firmly press it against the food handling equipment, tables or skin of the fruit and vegetables themselves. If there is chlorine present, the strip will change color within 15 seconds.
You can also test for chlorine in drinking water if you have concerns about this. We have tried it on the water in our area & the chlorine is below measurable limits.
Test Strip Documentation
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