All sales are Final. No returns or exchanges.
- Fill a clean test tube with 5 ml of water to be tested (to the line on the tube).
- Add 3 drops of pH Test Solution, holding dropper bottle upside down in a completely vertical position to assure uniformity of drops.
- Cap the test tube and invert tube several times to mix solution.
- Read the test results by comparing the color of the solution to the pH Color Card. The tube should be viewed in a well-lit area against the white area of the card. The closest match indicates the pH of the water sample. Rinse the test tube with clean water after use.