Hanna Calcium Meter

[NanoCat]

I have no problems with my hanna Ca checker. I did take a few test to get the hang of it but after that no problems. I have checked it against a salifert test a few times and it was always very close. Also to make adding the powdered reagent easy and more accurate buy or make a scoopula like I did. You can just crease a stiff plastic card to open the packet onto and the dump into the vial.