An ideal solution to compare against various home water tests- including your hydrometer and refractometer. ATI’s Reference Solution can be used to make sure that you’re getting the correct results every time and give you that extra peace of mind.
ATI’s Reference Solution includes:
Carbonate Hardness: 6.9 °dKH
Strontium: 7.5 mg/l
Magnesium: 1190 mg/l
Calcium: 380 mg/l
Salinity: 35 PSU
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