Accurately monitor quaternary ammonium disinfectant levels with Indigo’s 0–1500 ppm quat test strips. Prevent quat binding, meet FDA/NSF/health inspector requirements, and ensure compliance in restaurants, healthcare, and janitorial services.
Indigo® 0–1500 ppm quat test strips are for businesses and regulators who need reliable verification of quaternary ammonium disinfectant levels. Quats are widely used in food service, healthcare, schools, and janitorial cleaning, but their effectiveness depends on maintaining sanitizer concentrations within recommended ranges. Health inspectors often require test results that show sanitizer buckets, spray bottles, or wipe solutions are in compliance with FDA Food Code, NSF, and local regulations.
Indigo® 0–1500 ppm strips confirm that higher range concentrations are available when it matters in restaurants, cafeterias, hospitals and nursing homes. Staff and cleaning contractors can confirm their sanitizing solutions remain effective and meet all compliance requirements.
All Indigo® Quat (QAC) test strips come in 100 (not 50) strips per pack & 3 year minimum guaranteed shelf life backed by a Certificate of Analysis, Stability & SDS documents as listed below; Certificate of Conformance on request. Be prepared for any health & safety audit or inspection.
Do not use hot water. Water warmer than 40C/105F may give false high readings.
The simple answer for "not in the desirable range" is to add more Quat concentrate if the reading is low. Add more water if the reading is high. Then retest. Don't worry about being exact, you can be +/- 10% without major consequences.
You may also find this useful: details on high level quat strips. If you run into repeated problems with getting the right concentration, try our Dilution Equation Calculator.
Test Strip Documentation |
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Stability Statement | Certificate of Analysis | SDS | ||
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Indigo® brand test strips are Made in USA & tested for accuracy using NIST compliant standards.