rsuplido
Member
I meant Phosphate Colorimeter not Photometer, sorry.
http://www.hannainst.com/usa/prods2.cfm?id=030011&ProdCode=HI 713
I just got mine. My first test came out at 0.03 ppm. I'm not using GFO, just dosing vodka and bacteria. Sweet!
Anyway, here's a copy of the instructions on how to do the test:
http://www.hannainst.com/usa/prods2.cfm?id=030011&ProdCode=HI 713
I just got mine. My first test came out at 0.03 ppm. I'm not using GFO, just dosing vodka and bacteria. Sweet!
Anyway, here's a copy of the instructions on how to do the test:

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