help with Hanna phosphate checker

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Originally Posted by lastlight

so you zero with one vial and have the other mixed?

why else would they give us two lol?

when I started and was slow with the Hanna was using both vials. Now do the C1, add reagent, shake, hold the button to get the 3 minute timer started then done. Seen a video where you crease the packet to get a funnel helps to pour.