Obtain the results for presence of hydrogen sulfide in grains by using properly calibrated test equipment, according to manufacturer's directions and any pertinent environmental regulations. Step 2 Multiply the result by 16.5. For instance, 0.25 grains of H2S equals 4.125 parts per million. Step 3 ...
Double-check the entry to ensure that it is accurate. Divide the ppm hardness value by 17.1, the conversion factor for ppm to gpg. The result is the water hardness expressed in grains per gallon. For example, say you have a water hardness value of 180 ppm. Work out 180 ÷ 17.1 = ...
Convert Parts Per Million to Nanograms Per Microliter (ppm in ng/μL). Parts Per Million and Nanograms Per Microliter both are the units of DENSITY. See the charts and tables conversion here!