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Items	Indexes
Items	Without Hydrargyrum Type Standard Tailormade for batteries	Alkali Manganese Type Standard	Common A Grade Standard
MnO2	91.5% Min	91.5% Min	91.0% Min
H2O	2.0% Max	2.0% Max	3.0% Max
Fe	80PPM Max	0.020% Max	0.02% Max
Cu	2PPM Max	0.0002% Max	0.005% Max
Pb	5PPM Max	0.0010% Max	0.0010% Max
Ni	3PPM Max	0.0005% Max	0.0010% Max
Co	3PPM Max	0.0010% Max	0.0010% Max
Insoluble in HCL	0.009% Max	0.01% Max	-------
SO4	0.9% Max	1% Max	-------
NH4	NIL	0.002% Max	-------
PH	5--7	5--7	5--7
Mo	0.5PPM Max	1PPM Max	-------
As	0.5PPM Max	0.5PPM Max	-------
V	0.5PPM Max	0.5PPM Max	-------
K	300PPM Max	500PPM Max	-------
Absorbency	15--20ml	-------	-------
visual ratio g/cm³	1.60--1.80	-------	-------
Grain Size +100 mesh 　Grain Size -200 mesh 　Grain Size -325 mesh	0.5% Max 85.0% Meet the need of user	0.5% Max 85.0% Min Meet the need of user	0.5% Max 90.0% Min Meet the need of user