Hydrion QT-40 Quaternary Sanitizer Test Tape 15 feet Roll Quat Color Chart 0-500 ppm Range

As accurate as always

Im not exactly sure how to review this item. It serves its purpose. Theyre not the sturdiest of strips but not sure how much that really matters.

I was looking for a wider range but the quality is good.

Work great for sanitizer solution.

Good option for restaurants. We used in our business and worked well to test sanitizer. Easy to use and tear off only what is needed.

Good stuff

Excellent, exactly as ordered, arrived quick!

Started using Quat tab since COVD-19 (1 tab to 1 gallon of water with spray bottles). Read somewhere cotton cloth is no good because cotton binds to the ions rendering Quat tab ineffective. Decided to experiment. From the picture there are 6 test strips. Starting at extreme right, solid green was from a freshly made Quat tab batch in one gallon of water. To the left a lighter shade of green tested immediately after dropping cotton towel. To the left of that the almost yellow looking strip was tested about 1 minute after towel was in bucket.

The product does not work, its the same with water as with vinegar.

These strips are easy to use. We have been using them for 3 years. We will reorder in the future