Phone: (519) 746-4761

Canadian Address:

169 Lexington Court, Unit I

Waterloo, ON, N2J 4R9


US Address:

Niagara Falls, NY 14305

Canadian/International ship from Waterloo; US orders from Buffalo, NY.

For a detailed quote including applicable taxes, proceed to checkout

2000ppm Free Chlorine

Daycare regulations require testing chlorine concentrations for both sanitizing & disinfecting. Indigo brand 0-2000ppm chlorine test strips do both for only $15.95 per 100 strips. Minimum 2 year shelf life if stored properly.

Use our free Chlorine Bleach Dilution Calculator to take out the guesswork.

SKU: 33815-2000
Chlorine Test Strips; Childcare, 0-2000ppm, ~100 strips/pack

$15.95USD or lower Each

Save More When You Buy More!
Quantity1+10+ 100+ 
Price for each$15.95USD$14.40USD$12.85USD
Your savings- 9.72%19.44%
Quantity :

Current Reviews: 3

The color chart has ranges for sanitization (50-200ppm) & disinfection (500-800ppm). 800ppm is considered the maximum level for child safety in the event of ingestion.

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 but in this instance the video shows an 8.25% solution diluted to produce 650ppm (the midway point of 500-800ppm for disinfection as shown on the color chart).

Note: the video below has references to our original domain, Please ignore and bookmark us at

You may also want to look at the following 2 pdf files from the State of California for "Sanitize Safely & Effectively" & "What is Safe & Effective Use of Bleach"

Note(1): If vial is properly stoppered, strips have a 2 year shelf life.

Note(2): These strips measure free (available) chlorine

Note(3): The number of strips per pack or vial is approximate.

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 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
50 (ppm)
ml Bleach
200 (ppm)
ml Bleach
500 (ppm)
ml Bleach
800 (ppm)
ml Bleach
Volume (ml)
0.25 1 2.5 4 250ml
1 4 10 16 1000ml
4 16 40 64 4000ml
0.23 0.9 2.25 3.6 225ml (US cup)
0.95 3.8 9.5 15.2 950ml (US Quart)
3.8 15.2 38 60.8 3.8L (US Gal.)

  1. Note: If vial is properly stoppered, strips have a 2 year shelf life.
  2. Note: These strips measure free (available) chlorine
  3. Note: The number of strips per pack or vial is approximate.

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

5 Stars 2019-07-05

We operate an Adult Daycare program and our local supplier, for these strips, stopped carrying them in the strength we needed several years ago. I found Indigo online and we get fast, efficient service with good pricing. Website is very "User Friendly". Very satisfied with this Vendor.

5 Stars 2019-05-13

Excellent website, and quick delivery. Very happy with service.

5 Stars 2017-10-10

-Sr. Paul Mary
I ordered this product for my child care center. The order arrived quickly and the product worked well.

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