![]() Hence, weigh out 2.542g NaCl and dissolve in 1 liter volume to make a 1000 ppm Na standard.Į.g. Make a 1000 ppm standard of Na using the salt NaCl.ġg Na in relation to FW of salt = 58.44 / 23 = 2.542g. nitric or hydrochloric acid, and make up to the mark in 1 liter volume deionised water.Į.g. From the pure metal : weigh out accurately 1.000g of metal, dissolve in 1 : 1 conc. PPB = Parts per billion = ug/L = ng/g = ng/ml = pg/mg = 10 -9ġ. Ppm = ug/g =ug/ml = ng/mg = pg/ug = 10 -6ġ gram pure element disolved in 1000ml = 1000 ppm PPM is derived from the fact that the density of water is taken as 1kg/L = 1,000,000 mg/L, and 1mg/L is 1mg/1,000,000mg or one part in one million. One thousanth of a gram is one milligram and 1000 ml is one liter, so that 1 ppm = 1 mg per liter = mg/Liter. ![]() One gram in 1000 ml is 1000 ppm and one thousandth of a gram (0.001g) in 1000 ml is one ppm. PPM is a term used in chemistry to denote a very, very low concentration of a solution. PPM conversion values and serial dilutions : ![]()
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