FAS-DPD k2006 tester this part of my test turns yellow instead of Pink do you use the same water sample or do you refresh the water sample?
Add 5 drops of R-0003 and swirl to mix. If the sample remains clear, your CC level is zero.
If the sample turns pink again, add R-0871 one drop at a time, swirling constantly and counting the number of drops as you go. Continue adding drops until the color changes to clear. The pink color may become extremely faint before it goes away. Make sure that the sample goes completely clear.
Multiply the number of drops by 0.5 to get your CC level.
Dispose of the sample safely. It is best to pour it down the drain with the water running. Do not add it back to the pool.
Rinse the sample tube with tap water and store for next time.