what do test strips measure in the sanitizing solution

Test strips used for measuring sanitizing solutions typically assess the concentration of a specific sanitizing agent in the solution. The most common types of sanitizing agents measured by test strips include:


Chlorine is a widely used sanitizer in various settings, such as swimming pools, spas, and food service establishments. Test strips designed for chlorine concentration will indicate the levels of free chlorine and sometimes total chlorine in the solution. Proper chlorine levels are essential for effective sanitization.

Quaternary Ammonium Compounds (Quats or QACs):

Quaternary ammonium compounds are commonly used as sanitizers in the food industry and for general disinfection. Test strips for Quats measure the concentration of these compounds in the sanitizing solution.


Iodine-based sanitizers are utilized in some food service establishments and healthcare settings. Test strips for iodine measure the concentration of iodine in the sanitizing solution.

Hydrogen Peroxide:

Hydrogen peroxide is another sanitizer used in various applications. Test strips designed for hydrogen peroxide concentration help ensure that the solution is within the effective range for sanitization.

Peracetic Acid:

Peracetic acid is a strong oxidizing agent and is used as a sanitizer in certain industrial and healthcare settings. Test strips for peracetic acid measure its concentration in the sanitizing solution.

sanitizing test strip

It’s crucial to use the correct type of test strip for the specific sanitizer being used. The strips provide a color change or other visual indication based on the concentration of the sanitizing agent in the solution. Users can compare the color change to a provided color chart to determine whether the concentration falls within the recommended range for effective sanitization.

Regular testing with these strips ensures that the sanitizing solution remains at the appropriate concentration, helping to maintain a hygienic environment and comply with health and safety regulations. Always follow the manufacturer’s instructions for both the sanitizing agent and the test strips to achieve accurate and reliable results.

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