720ppm of Ca?!!!!

[titus]

Hello,

Just received my Salifert dkH test kit so decided to give the system a routine test. Here are the interesting and puzzling results:

Ca = 720 ppm
dkH = 10.6

What the???!!! I used the Hagen's Calcium test kit and counted 36 drops of Reagent 3. So 36 * 20 = 720 ppm.