PO4 test kits - Hanna VS Salifert

[Myka]

Originally Posted by Ryanerickson

Difference for me was lower results with your method to me it looks like the powder mixes better with the longer time frame to work with it .

That doesn't make sense though. It's just powder, it's not engineered to only mix so much in 2 minutes. I never have unmixed powder after the 2 mins anyway. If I see the bubbles are all out, I'll often put it right into the checker after the 2 mins mixing. I've never had unexpected or unusual results. I'll give it a shot today.