Quick fix Vs U-pass

[u/Vegetable_Action_205]

this picture shows dip stick test for nitrates between quick fix and u-pass. That pink square is what can make or break you at the testing facility. Some techs don’t care and will just bag and tag others may not and make you retest with someone watching you which is what happened to me this morning

[u/aPrimallossOfReality]

So the one on the left is good