The pH 1-14 test strips are wide-range strips measuring in steps of 1.0 pH units, and give results in just seconds. Use wide range pH 1-14 test strips (acid-base) when you have a diverse range of materials and you are unsure what end of the spectrum you will land on, in order to select which narrow-range strip you should use for final measurement.
Pack of 50 strips in a resealable bag with a waterproof reference chart/instruction sheet.
Remove one test strip by holding the test strip between your index and thumb finger. Do not touch the test pad with your fingers.
Immerse the test strip about 1/2″ into the solution to be tested for 1-2 seconds.
Remove the test strip, and shake off any excess liquid.
Compare the test pad to the color chart within 30 seconds. Do not allow the test strip to dry before reading against the color chart.