| ≥1 piece |
|
Sense
|
|||
|
Color
|
White to nearly white
|
pass
|
|
|
Odor
|
Odorless or almost odorless
|
pass
|
|
|
Appearance
|
Free-flowing powder
|
pass
|
|
|
Gel strength
(2% aqueous suspension)
|
g/cm 2
|
>500
|
760
|
|
Purity
|
?
|
?
|
?
|
|
Loss on drying
|
%
|
<10
|
6.91
|
|
Ash
|
%
|
<7
|
1.2
|
|
pH
(1% aqueous suspension)
|
6.0-7.5
|
6.80
|
?
|
|
Nitrogen content
|
%
|
<1.8
|
<1.8
|
|
Heavy(As pb )
|
ppm
|
<20
|
<10
|
|
Arsenic ( As2O3)
|
ppm
|
<2
|
<2
|
|
Others
|
?
|
?
|
?
|
|
Particle size
|
?
|
?
|
?
|
|
80 Mesh
|
%
|
100% Through
|
Pass
|
|
120 Mesh
|
%
|
>98
|
Pass
|
|
Total plate count
|
cfu/g
|
<10000
|
630
|
|
E.coli
|
MPN/100g
|
<30
|
Negativee
|