Precision Laboratories QAC test papers and strips utilize an effect commonly referred to as the “protein-error of indicators” to quantify the QAC ppm levels. While first observed with proteins (thus the name), the technique utilizes [...]
A health inspector using QT-40 test strips compared their results to a customer using our QAC QR5 test strips, and the results were the same. The strips, however, are different in color and appearance. So, [...]
Can the Quick Response QAC (QAC-400) test strips be used to test clean surfaces by first dipping the strip in distilled water, and then pressing on a dry, cleaned food contact surface to obtain a [...]
Yes! It's called QAC QR5. Dip the test paper into the solution for 1 second, and wait 5-10 seconds before comparing to the color chart.
Our test strips have been calibrated for use with all the commonly used hyamine and steramine quat (quaternary ammonium chloride) solutions. Some commercially available strips have errors as high as 50%. Use this guide to [...]
The accuracy of QAC tests strips does not depend on the pH value of solutions to be tested in the range of 1.86 – 9.2 pH, but rather it depends on buffering capacity. When the [...]
Higher temps: Testing was run on set of control solutions 0 – 50 – 100 – 200 – 400 ppm Hyamine 1622 (Fluka) warmed up to temperatures in the range 35 – 60oC. T (oC) QAC strips [...]
The Hydrion QAC test strips are reddish-orange in color before use. Our QAC test strips are yellow in color before use. Instructions for the Hydrion QAC test strips tell you to dip the strip into [...]