Ensure food safety in schools and daycares with Indigo® 400ppm quat test strips. Simple, fast sanitation compliance for cafeterias, prep areas, and kitchens..
Food safety is critical in schools and daycare centers, where children are especially vulnerable to foodborne illness. Quat test strips calibrated for 400ppm sanitizer strength make it easy for staff to verify compliance with state and local health regulations. By confirming that quaternary ammonium disinfectant solutions are within the correct range, these test strips help ensure cafeteria, prep, and serving areas remain safe and hygienic. Fast, accurate, and affordable, Indigo® 400 ppm quat (QAC) test strips are a trusted tool for kitchens serving large groups of children every day.
Test quaternary ammonium sanitizer solutions before each meal service.
Ensure readings show 200–400ppm, with 400ppm recommended for compliance in most regions.
Train cafeteria and daycare kitchen staff on proper strip use and documentation.
Store strips in a cool, dry place to maintain accuracy.
This test strip can measure the strength of many multi-quat formulations of single, dual and 4-chain quat disinfectants as listed in Quaternary Ammonium Compounds. You can even compare their chemical structures with the Indigo®3D Molecular Model Builder.
Related information or images
400ppm QAC Test Strips Foodservice/Sanitation
Healthcare/Hospitals
Transportation Foodservice
Catering, Mobile Food Vendors
Restaurants & Foodservice
White Rice Processing
Specifications
Temperature and QAC strips reading relationship
Temperature vs ppm results for commercial formulations of quaternary amine sanitizers/disinfectants from 20 to 60oC (68-140F).
50, 100 ppm read~ 1/2 color square higher; 200, 400 ppm read 1 color square higher
55/131
Readings 1 color square higher across whole range
60/140
Readings 1 color square higher across whole range
Dip strip for 1-2 seconds & get readings in 10 seconds at 0-100-200-400 ppm for quaternary ammonium disinfectant concentration. Read strip results immediately. If you wait the 30 seconds needed for some other strips you will get a reading that is too high.
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.
They work wonderfully, was so happy to finally solve my sanitizer testing problems and to use hot water is great as well.
— Cindy
— Indigo:
Thanks for letting us know your experience with hot water. The chemist who designed the strips even provided us with instructions on what to expect when using hot water with quats.
2018-01-09
Great product as always and excellent service.
— john
2017-09-20
Excellent product- temperature range is far more liberal and fits our needs. State surveyor recommended! Down side is cost may be a factor considering old strips are provided for free from our vendor.
— Brett Anderson
— Indigo:
If you are using old strips, be careful as they may not be accurate. We in fact guarantee ours for 3 years minimum.Â
2017-08-08
The order came very quickly and is producing the results we hoped for when ordering this product
Thanks for noting our prices. Our discounts start at just 2 it costs the same to as 1.