Assay (C6H10CaO6) calc. a.a.s................................................98,0-101,0%

Acidity (as lactic acid) a.a.s., not more than................................... 0,45 %

Arsenic (as As), not more than........................................................ 3 ppm

Fluoride, not more than.............................................................. 0,0015 %

Loss on drying........................................................................22,0-27,0 %

Magnesium and alkali salts, not more than.........................................1 %

Volatile fatty acids................................................................................ p/t.

Reducing substances........................................................................... p/t.

Heavy metals (as Pb), not more than........................................... 0,001 %

Lead, not more than........................................................................ 2 ppm

Mercury (Hg), not more than........................................................... 1 ppm

pH of 5% solution.......................................................................... 6,0-8,0