Customizable water-resistant label Desiccant vial with flip-top lid

1. Remove one test strip from the vial, being careful not to touch the test pad with your fingers.
2. Dip the test strip into the solution to be tested and remove immediately.
3. Immediately compare the test pad to the color chart. It is very important for the accuracy of the results to read the strip immediately (the maximum wait time is 5 seconds).

Precision Laboratories quat 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 pH indicators and buffering systems to create an environment where the test paper or strip reacts (develops color) proportional to the amount of analyte (QAC) present.  The PL quat test papers and strips have color charts calibrated to solutions prepared from OASIS 146, an industry standard quat product.  The performance of the papers and strips with alternate quat products should always be verified.  In addition, any additives should be evaluated to see if they contribute to the “protein-error” effect.