Buy Indigo brand 400ppm QUAT test strips; only $7.95. Plastic strips are sturdy for easy reading & fast accurate results.
Note: Read immediately. If you wait 30 seconds as required by other strips you will get a reading that is too high.
See Details below for quats that are effective against bacteria, yeasts, mold & viruses. Our blog, Wash, Rinse, Sanitize: The Three Sink Method, outlines standard cleaning procedures.