Hi Guys. Purchased the Hanna Calcium Checker on the 11/18/17 and up until today it has been working great. I'm using the Hanna deionized water and minipipette to make sure I only get 0.1ml of sample water.
Today, three checks in a row yielded results of 579, 538, and 479. Red Sea two checks in a row yielded results of 425 both times which is where it should be based on my dosing.
I just ordered the Hanna Calcium Checker Certified Standard Kit. I'm hoping it will show that the checker is no longer calibrated.
Has anyone else experienced this issue before?
Today, three checks in a row yielded results of 579, 538, and 479. Red Sea two checks in a row yielded results of 425 both times which is where it should be based on my dosing.
I just ordered the Hanna Calcium Checker Certified Standard Kit. I'm hoping it will show that the checker is no longer calibrated.
Has anyone else experienced this issue before?
