Chlorine Disinfection Test Strips 1000ppm

SKU: 33815-1000

$15.95USD or lower Each

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Quantity1+2+ 3+ 10+ 100+ 
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[5]   7 Reviews    | Write a Review

Buy Indigo® brand 0-1000ppm chlorine test strips to measure available chlorine & meet government sanitizing regulations. Spend less-buy just 3 packs of 100 strips backed by our 3 year minimum guaranteed shelf life & beat their "free" shipping; now that's bang for the buck!

Full documentation including Certificate of Analysis, Stability & SDS are available below; Certificate of Conformance on request. Be prepared for any health audit or long term care home safety inspection.

NDAA Section 889 form available to Government Purchasers upon request.

Proper home hygiene with fast acting, inexpensive household bleach cleaner will keep your seniors long term care residence safe from microorganisms. Ensure your bleach spray has a 1000+ ppm disinfecting solution ready for doorknobs, toilets, showers, countertops, phones, computers, pool decks and more. 1000ppm levels of active chlorine can kill M. tuberculosis according to the AOAC tuberculocidal test. 500ppm levels of free chlorine can inhibit Candida sp. after only 30 seconds and is also effective at decontaminating CPR manikins.


In the case of cruise ships, food borne illnesses can spread rapidly because of crowded conditions and can overwhelm on board health care facilities. These high level, 1000ppm (0.1%) chlorine test strips will determine in seconds whether your chlorine bleach solutions are at the higher strengths required. The CDC advises how to reduce the risk of getting a norovirus based illness on cruise ships, in nursing homes, daycare of schools.

You can use our bleach dilution calculator to correctly calculate the amount of bleach & water needed to prepare the ppm levels indicated above. This calculator will allow for any concentration of chlorine bleach to be used to prepare a sanitizing/disinfecting solution. Watch the video:

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 Sanitizer 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.
Amount of 5% Chlorine Bleach to Make Final Volume
250ppm: ml Bleach 500ppm: ml Bleach 1000ppm: ml Bleach Final Volume (mL)
1.25 2.5 5 250 (~1 cup)
2.5 5 10 500 (~2 cups)
5 10 20 1000 (~US Quart)
20 40 80 4L (US Gal.)


Related information or images
Immediate results with readings at 50, 100, 250, 500, 1000 ppm for free (available: HOCl & OCl-) chlorine bleach concentration. The detection limit of this strip is 25 ppm.
  • 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 Calibration Fluid CoA
Indigo Chlorine 1000ppm Test Strip Stability Statement Indigo Chlorine 1000ppm Test Strip Certificate of Analysis Indigo Chlorine 1000ppm Test Strip SDS Calibration Fluid Certificate of Analysis

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

Reviews (7)

Good prices and range of products. Great customer service and glad to support a Canadian business


Great quality strips, price, and fast delivery!

— Laurie
Ordered a few different testing strips. I was very happy with the quality, shipping and customer service. The price was also great and the detailed descriptions on the products made the ordering process super fast which I truly appreciate. Will be ordering again.

Have passed on the name of the company to others looking for the same product. Great customer service and price

— Jessica
— Indigo:

Passing along our name is the highest level of endorsement. Much appreciated.

Great company to work with. They emailed straight away to let me know when it was going to be delivered and any delays. Good pricing and in stock. Will use them again.
— Julie

After searching online for 1000 ppm test strips, I found these at Indigo Instruments, and they were exactly what I needed, plus very reasonably priced! In an era where it is hard to find good customer service, I was pleasantly surprised when Chris answered all my questions, and made sure the product I ordered was what I was looking for! He was super helpful and knowledgeable. We received the product quickly and would not hesitate to order from Indigo again. Thanks, Indigo!

— Nancy
— Indigo:

Glad we could help. Perhaps our greatest strength is that eveyone handling customer inquiries has a science degree. 

Indigo Instruments was great to work with. My package arrived in a timely matter and they contacted me following my delivery to make sure everything made it okay. I am very please with my service from this company.
— Taiya
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