10000ppm Free Chlorine

SKU: 33815-10K

$21.95USD or lower Each

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[5]   4 Reviews    | Write a Review

Kill resistant bacteria & viruses even in the presence of blood/feces with 10,000ppm chlorine bleach. Great for killing viruses on face shields. Get 100 test strips/pack for lowest cost per test and fast, reliable results.

See: Cleaning and Disinfecting 3M Facepiece Respirators following Potential Exposure to Coronaviruses: Possible disinfection methods Sodium hypochlorite solution (at a free chlorine concentration of 5,000 ppm) with 1-minute contact time.

Effective for coronavirus & norovirus in hospitals, daycare and seniors homes. Use our free Chlorine Bleach Dilution Calculator to take out the guesswork.


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


Chlorine bleach at high concentrations is an effective germicide for dangerous pathogens including viruses such as Ebola, bacteria such as MRSA (methicillin resistant Staphylococcus aureus) staph infections & Clostridium difficile, found ever more frequently in hospitals and other health care facilities. However, the removal of free chlorine by organic contamination (blood/feces) can seriously reduce the sanitizing effects of chlorine cleaning solutions. To ensure the 1000ppm minimum strength for adequate disinfection, much higher initial concentrations, up to 10,000ppm (1%) chlorine levels are recommended to counteract this. These strips are very simple to use. Simply dip a strip into the bleach solution so that the indicator pad is fully immersed. Then withdraw and compare to the color chart on the vial.

  • Strips come in desiccant lined bottle that absorbs moisture once opened.
  • Best used within 6 months of opening.
  • Guaranteed 2 year shelf life but can last 5 years if unopened.
  • These strips measure free (available) chlorine
  • The number of strips (100) per vial is approximate.

Test Strip Documentation

Stability Statement Certificate of Analysis

The following table shows how much bleach is needed to make up different concentrations of disinfectant based on an initial concentration of 5% (most store bought bleach sold in North America is rated at 5.25% but loses strength with time).

  1. Choose a container large enough to hold the final amount of diluted bleach you want to make.
  2. Measure & pour into the container the amount of 5% (initial) chlorine bleach you need.
  3. Fill the container with water to the level of the Final Volume.
  4. For concentrations other than 5%, use our Bleach Dilution Calculator to determine what you need.
  5. If you are unfamiliar with millilitres (mL), you can use this Metric to American volume converter.
  6. If you don't have the exact measuring tool, round up not down. i.e. for 47.5ml use a 1/4 cup.

Amount of 5% Chlorine Bleach to Make Final Volume
2500 (ppm)
ml Bleach
5000 (ppm)
ml Bleach
10,000 (ppm)
ml Bleach
Volume (ml)
12.5 25 50 250ml
50 100 200 1000ml
200 400 800 4000ml
11.25 22.5 45 225ml (US cup)
47.5 95 190 950ml (US Quart)
190 380 760 3.8L (US Gal.)

You can view the structure of the chemical indicator for this strip by clicking on: 3,3’,5,5’ – tetramethylbenzidine.

Reviews (4)
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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