Test Method
Note: shake the reagent bottle gently before use and seal it well after use
1. Add the water to be tested exactly to the red line of the beaker (6mL).
2. Drop the blue reagent into the water and count them.
3. Stir the water after every few drops. Water will turn colorless from blue if hydrogen is present.
4. Continue to drop and stir until the water no longer becomes colorless (remains blue), that’s the end point of the test.
5. Multiply the total drops counted by 100ppb to get the hydrogen concentration in ppb.
* A drop of reagent represents the reaction with 100ppb hydrogen. If 15 drops of reagent are dropped, the concentration is 15x100ppb=1500ppb (1.5ppm).