Name of index

GB14889-94

BP93

BP98

Appearance

White or light yellow crystal or powder

White or light yellow crystal or powder

White or light yellow crystal or powder

Content(K3C6H5O7) >=%

99.0

99.0-101.0

99.0-101.0

Heavy metal(AsPb)  =<%

0.001

0.001

0.001

AS  =<%

0.0003

-

0.0001

Loss on drying %

3.0-6.0

-

-

Moisture%

-

4.0-7.0

4.0-7.0

Cl  =<%

-

0.005

0.005

Sulphate Salt  =<%

-

0.015

0.015

Qxalate Salt =<%

-

0.03

0.03

Sodium  =<%

-

0.3

0.3

Alkalinity

Accord with the test

Accord with the test

Accord with the test

Readily Carbonisable Substances

-

Accord with the test

Accord with the test

Transparenly and color of sample

-

Accord with the test

Accord with the test

Pyrogens

-

-

Accord with the test