10000ppm Free Chlorine

SKU: 33815-10K

$21.95USD or lower Each

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Quantity1+2+ 3+ 10+ 100+ 
Price for each$21.95USD$21.55USD$21.15USD$19.95USD$17.95USD
Your savings - 1.82%3.64%9.11%18.22%
[5]   5 Reviews    | Write a Review

Buy Indigo® 10000ppm high level chlorine test strips to ensure enough free chlorine (sodium hypochlorite) is available for disinfection only $21.95 /100 strips. Effective for coronavirus, norovirus & drug resistant strains of bacteria such as MRSA.

Buy more & save with our 3 year minimum guaranteed shelf life. Full documentation including Certificate of Analysis, Stability & SDS are available. Be prepared for any health & safety audit or inspection.

Indigo® brand chlorine test strips are Made in USA & tested for accuracy using NIST compliant standards.


The removal of free chlorine by organic contamination (blood/feces) can seriously reduce the sanitizing effects of chlorine disinfectant solutions. To ensure the 1000ppm minimum strength for adequate disinfection, higher initial concentrations up to 10,000ppm (1%) chlorine levels are recommended to counteract this.  Use Indigo® extra high level 5000-10000 ppm test strips to confirm your hospital grade surface disinfectant spray will be effective in the presence of binding organics.

Chlorine bleach at high concentrations is an effective germicide for dangerous pathogens including viruses such as Coronavirus, bacteria such as MRSA (methicillin resistant Staphylococcus aureus) staph infections & Clostridium difficile, found ever more frequently in hospitals and other health care facilities.

Having trouble trying to calculate how to prepare a 1000, 2500, 5000, 10,000 (or other) ppm chlorine solution for surface disinfection? Use our chlorine bleach dilution calculator to take out the guesswork or watch the video:


Related information or images
Results in 30 seconds with readings at 1000-2500-5000-10000 ppm for free (available) chlorine bleach concentration.
  • Indigo® test strips have a guaranteed minimum 3 year shelf life but are stored in desiccant lined vials so actual shelf life can be 5+ years.
  • For technical explanation, read: Sanitizer Test Strip Expiration; Good Today, Dead Tomorrow?
  • These strips measure free (available) chlorine
  • The number of strips (100) per vial is approximate.


Test Strip Documentation

Stability Statement Certificate of Analysis SDS
Indigo Chlorine 10000ppm Test Strip Stability Statement Indigo Chlorine 10000ppm Test Strip Certificate of Analysis Indigo Chlorine 10000ppm Test Strip SDS
Reviews (5)
Great product and we use it daily to test our bleach solution. Working with Indigo Instruments was easy and our order arrived by the promised date even though we are in Hawaii.
— Kristi
Order was easy and delivery was quick. Great product. Will order from them again.
— Debb Gagen
Great service and excellent prices. Very fast delivery also
— Shirley
Great product worked as expected. These strips were a great help to us and Indigo Instruments has been great to work with. Thanks!
— Steve
— Indigo: Glad we could help Steve. Thank you for review.
Good product. Will definitely order again.
— Gus
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