When I test my chlorine with FAS-DPD and slowly drop the liquid in until it turns clear, if I wait 5-10 seconds afterwards, it turns light pink again to where I could put 1-2 more drops in again to get it clear. Is this normal? Which result do I go with? The one that intitially turned it clear or the one where I had to add more drops after waiting a few more seconds?
Happy 4th!
Happy 4th!