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  • Tests 10-200ppm
  • Includes color chart and 100 test strips
  • Easy-to-read color chart, immediate results
  • Measures chlorine sanitizing agents to detect exhaustion or excessive amounts
  • Simple, reliable, and economical
UPC Code:400012308031
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Ensure your solutions are safe for use with these Noble Chemical CM-240 chlorine test strips!

Noble Chemical CM-240 chlorine test strips are the simple, reliable, and economical way to measure the concentration of free available chlorine in sanitizing solutions. Each strip measures concentrations between 10-200ppm (parts per million), with color matches at 10, 50, 100 and 200ppm.

  • Made in America

    Made in America

    This item was made in the United States of America.

Easy-to-Read Color Chart

Each strip measures concentrations between 10-200ppm (parts per million), with color matches at 10, 50, 100 and 200ppm. The distinct color chart and accurate, reproducible readings give an immediate response for quick and easy use.

Meets Requirements

Federal, state, and local health regulations require users of chlorine-based sanitizer solutions to have appropriate test kits available to verify the strength of sanitizer solutions. This kit meets those requirements.

Easy to Use

The distinct color match at each full unit makes it easy for the user to detect exhaustion of solutions that should be replaced. It also helps avoid the use of excessive amounts of sanitizing agents, to avoid wasting product! Simply remove a strip from the vial, dip the strip into the sanitizing solution, blot with paper towel, then instantly compare the resulting color with the color chart.


Sanitizer solutions are essential in the food service industry. These strips ensure that those sanitizers are at the proper concentration. For accurate results, store these test strips away from areas with high humidity or where they may be exposed to water before use, as those conditions may compromise results.

Compare to Other Products

Kit Includes:
  • Vial:1
  • Color Chart:1
  • Test Strips:100

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Overall User Rating:

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4.9 stars from 87 reviews


People Talk About:

strips test chlorine easy great water health levels price department

Customer Reviews

See All 87 Reviews

A must have in any commercial kitchen! Excellent testing strips and easy to keep near sink. Health inspector loves to see these at the sink.

Lea V. from Eat It & Beet It, LLC on 04/25/2022

We actually bought some test strips for our laundromat but it seems like they are so great that we need to actually purchase some more test strips

Edward C. from Laundromat on 04/07/2022

Not much to say about these, they are test strips and they do what they are designed to do. Only complaint i have is that all the markings have just about worn off my vial before i used all my strips.

Chris S. from The 301 on 01/19/2022

These are great strips we use these daily. They work quickly and it easily detects the chlorine in our dishwasher water. I like that it comes in 100 packs because we do use these frequently.

Ahmad from Muscle Maker Grill on 01/16/2022

Necessity in a restaurant. These strips are used daily to test the water for bleach levels & when done right these are great and accurate.

Tzemach W. from Boeuf & Bun on 01/14/2021

I've bought chlorine test strips before but have not been accurate. I trust this product to say the correct thing and definitely recommend them to anyone in need.

James S. from Supplies By Nitelite on 11/02/2020

These Noble Chemical Chlorine Test Strips are a life saver. We use these daily to check chemical levels on our dish machines. They work great every time.

Shane M. on 10/06/2020

For the price there is nothing to complain about this test strip. The strip is easy to use and there are plenty in one tube.

Su K. on 07/06/2020

It does the job! All strips come glued together at the end, which I thought was kind of annoying, but I don't expect it to be different. So what I did was just cut the glue off and now I can grab an individual piece each time.

Scott D. from Scotty's Homemade Italian Ice, LLC on 06/13/2020

The last time someone from the Health Department came to check on me, I didn't have this. it’s cheap .I immediately ordered it from WebstaurantStore. Thanks

Dan C. from Poke Bar on 05/31/2020

Good practical product to have, these are accurate and help to measure chlorine level. They do the job and are very inexpensive, recommend having these.

Joe C. on 03/06/2020

These little strips help us monitor our 'sanitize' sink, and make my health department inspector happy. We keep them near the sink so we can keep our third compartment in compliance.

Pamela G. from Oneonta Candy Co. on 02/28/2020

We only use these branded strips in our restaurant, they have proven to be accurate and consistent with their readings. We rely on them, day in and day out.

Nordic B. from Nordic Brew Works on 01/30/2020

These are a very important tool that we use by both of our dish stations. It is required by DHEC so it is a must to have on hand. This brand is very trusted.

Perry F. from Charleston Sports Pub on 01/10/2020

A must-have item that does the job. Every inspection includes a check to see that we are using these so I keep plenty on hand. I tear them in half to make them last twice as long. (A little trick the inspector told me about.)

Karen K. from Deli Station on 12/31/2019

Chorine test strips work well, my only feedback is it is kind of hard to get them out of the container. Maybe this is just me though!

Stephanie Y. from Yoder's Dairy Barn on 12/24/2019

These work well, the tastes always come out the same for our strips as the ones the health department uses so that is great, just be sure to keep them out of high humidity and excess moisture as the container isn't as watertight as I'd like

Sarah A. from Pizza Fresca on 12/04/2019

Great product you get a lot of strips for very little money easy way to test the levels. I will be ordering more for my business

Tj W. from Thomas Woodruff on 10/26/2019

Health inspector loves to have these on site! Make sure to keep them and let them know they are for chlorine! These are very accurate and great price!

Helen G. from Somethin' Sweet on 10/13/2019

Easy to peel/pull off per use to get a strip and then you just gauge the color it turns as you add your tablets, super easy!

Jacob F. from Dashboard Tea Company on 09/27/2019

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