|
Item
|
Index
|
|
Superior-grade
|
|
|
Appearance
|
Pure white single arrises crystals
|
|
Purity,%, ≥
|
99.8
|
|
Moisture,%, ≤
|
0.1
|
|
Ash content,%, ≤
|
0.03
|
|
Formaldehyde dissolve test
|
All dissolve in 10 minutes
|
|
Turbidity(kaolin turbidity). ≤
|
20
|
|
Colority(platinum-cobalt) number
|
20
|
|
PH value
|
7.5-9.5
|
