Originally Posted by mb2696
My report only lists what I typed above, verbatim. So, I'm not sure -- I guess I need to get for more information. I might just send off a sample to Ward anyway.
Although, is there any other way of reporting total hardness? I only see palmer talk about total hardness as CaCO3.
AFAIK, hardness is always going to be as CaCO3. The individual elements can be reported differently, but if it says hardness, you should be safe assuming CaCO3.
In your case, that wouldn't be 6 mg/L of Mg, but 6 mg/L Mg hardness as CaCO3.