When I was using kalk, I had to supplement calcium.
I thought Kalk WAS a calcium supplement.
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When I was using kalk, I had to supplement calcium.
out of date reagents may still be accurate, storage plays a great roll. if they were exposed to moister they will be inaccurate. if they remained very dry they may test accurately. you can test the 2 against each other to see if they measure the same or not.
The main thing to think about is whenever you have a test result that seems extreme, high or low, always double check again another test kit or 2.
I thought Kalk WAS a calcium supplement.