Well I was totally not paying attention earlier and grabbed the copper checker and not the PH. My testing steps (for Alk, Cal, Mag) have always involved rinsing the cuvette and 10ml syringe 2-3 times in the display water. I unknowingly did this with my copper test kit cuvette and syringe. Bonehead move.
I got a result of .14 ppm on the Hanna High range. I did another test with a brand new syringe and obviously no rinse and got .10 ppm.
Think this is a false negative? Or how likely is it I contaminated it with the rinse? By rinse I don’t dump the whole cuvette in the tank I pull up 10ml water shoot it into the cuvette swirl around and then dump back in tank 2-3 times.
Bummed hope I didn’t “nuke” the tank. Cuprisorb and a big water change tomorrow?
I got a result of .14 ppm on the Hanna High range. I did another test with a brand new syringe and obviously no rinse and got .10 ppm.
Think this is a false negative? Or how likely is it I contaminated it with the rinse? By rinse I don’t dump the whole cuvette in the tank I pull up 10ml water shoot it into the cuvette swirl around and then dump back in tank 2-3 times.
Bummed hope I didn’t “nuke” the tank. Cuprisorb and a big water change tomorrow?