Thanks yes I'm familiar with this service the problem I live outside the USThe gold standard for this is the W-501 brewer's test from Ward Labs in Nebraska, USA.
Water Analysis - Ward Laboratories Inc.
I'm not aware of any home test able to provide the specificity of this one. They send you a small box with a plastic bottle and a pre-paid return label. You fill the bottle, pack the box back up, put the label on it, and a few days later you'll get a PDF file emailed to you with the detailed results.
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