INDEX	UNIT	STANDARD
TOTAL ALKALI CONTENT(BY NaHCO3)	%	99.0-100.5
HEAVY MENTAL CONTENT(BY PB)	%	≤0.0005
ARSENIC CONTENT(AS)	%	≤0.0001
PH VALUE(10G/L)		≤8.6
LOSS ON DRY	%	≤0.20
AMMONIUM SALT CONTENT		VIA TEST
TRANSPARENCY		VIA TEST

PRODUCT QUALITY SATISFIES GB1887-1998 CHINESE NATIONAL STANDARD.