When I do a test with the color block apparatus, I am getting an FC reading of about 2.5.
When I then do the FAS/DPD test from the TFT-100, I am getting an FC reading of 8.
I believe the color block test more than I do the FAS/DPD right now, which is not the way it's supposed to work!
I lost the small blue scoop used to put the powder in the test cylinder, so I have been estimating with a different small scoop.
The amount of powder always struck me as pretty subjective anyway, but I'm wondering if this is where my problem is.
When I put it in the cylinder to test FC, the water is a brighter shade of pink than I ever remember it. Is that a result of too much powder?
I have had my kit for just over a year. Can the powder go bad?