I recently got a FAS-DPD chlorine test and the instructions say to add 2 dippers of powder. I know its better to add more than you need.
But I'm curious about,
Why 2 dippers? How much chlorine does 1 dipper of powder bond with? (Not sure I phrased that correctly..)
If I'm expecting a reading of less than 5 ppm can I use just one dipper?
And if I'm shocking to 20+ ppm is 2 dippers enough to test levels that high?
Also is the powder suppose to be 100% fine powder? Mine has a lot of crystals in it and they tend to sit at the bottom of the test tube not dissolving.
Thanks in advance