This is an enlarged image the Indigo® test strip color chart that comes with our high level, 0-1500ppm quaternary ammonium chloride (QAC) test strips.
We've been selling quaternary ammonium (quat) test strips since 2007. Buy best-in class, fully documented Indigo® QAC test strips, 100 strips/pack with a guaranteed 3 year shelf life (dated back from expiration date "yyyy.mm.dd"); see storage requirements in Specifications.
Dip strip & remove for immediate reading at 200-400-750-1000-1500 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® quat 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.
Store in original vial in a cool, 20-30C, dry, place out of direct sunlight.
Detection limit: 50ppm; Accuracy: +/- ½ color chart unit
Indigo® QAC test strips are calibrated for Oasis 146: see details. Consult your supplier if necessary.
Hard water (above 500 ppm) can cause the strips to read high, up to 1 unit.
The number of strips (100) per vial is approximate.
Reviews (3)
2020-06-19
Great product, very easy to use and understand.
— Tony Mack
2019-05-13
Excellent website, and quick delivery.
Very happy with service.
— Stu
2017-01-17
These guys are great! I can send in a technical question at the oddest hour and get a reply. Extremely customer focused and always willing to help. Every project that we have worked on together has been successful.
— Mike
— Indigo: You & your company are a pleasure to work with.
