Instructions

1. Immerse the strip for one second, then remove it; shake to remove excess water.

2. Compare with the color chart and read the result immediately.

Warning

1. If the water sample is colored, please remove the color until it becomes colorless, then conduct the test.

2. If the buffer solution is weak, place the test strip and wait until the color of the test strip does not change.

3. Ensure that wet fingers do not touch the bottle, do not touch or contaminate the test area on the strips, and try to avoid prolonged exposure of the strips to air.

4. Keep it in a cool, dry, and dark place.

5. It is recommended to use as soon as possible after opening.