Could everyone help me figure out what the hardness and alkalinity of this water sample are in ppm?
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file:///C:/DOCUME~1/trc622/LOCALS~1/Temp/msohtml1/01/clip_image001.gif Project: Water sample. Alkalinity (mmol/L), Hardness (mmol/L), CI- (mg/L), Ca2+ (mg/L), SO42- (mg/L), Turbidity (NTU), pH value. Reverse osmosis concentrate: 7.0, 38, 5150, 204, 961.4, 1.01, 7.20
Alkalinity and total hardness should be expressed as molar equivalent concentrations; in terms of calcium carbonate, the alkalinity should be 350 ppm. Calcium ions should be calculated as such; when expressed in terms of calcium carbonate, it should be 510 ppm.
It should be multiplied by 10 to the power of negative three PPM. Mol/L is equivalent to PPM, while mmol/L refers to millimoles
Please refer to: http://bbs.hcbbs.com/thread-654494-1-1.html
I have seen it; generally, it is assumed that 1 millimole = 50 ppm. We specialize in water quality instruments, and we are particularly strong in online hardness analyzers – we’re probably second in the country in this area. British company JENSPRIMA