Any more advice out there? I was thinking of taking the reference sample from my seachem kit, diluting it 50% with RODI water and running a reference test with that. The Seachem kit has 1mg/L reference sample but there's not enough for my 10ml test tube in the Hanna. So in theory if I dilute by 50% then I'd have a sample that's .5mg/L or very close to .5ppm.
Sound theory?
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