| ≥1 piece |
|
Items
|
Specifications
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Appearance
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White crystalline powder
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|
Loss on drying
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Not more than 1.5%
|
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Residue on ignition
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Not more than 0.05%
|
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pH (30%solution)
|
4.5-6.5
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Color of solution
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Not more than 0.100
|
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Turbidity (30%solution)
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Not more than 0.050
|
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Purity (dry solid base)
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Not less than 98.0%
|
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Heavy metals(as Pb)
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Not more than 5ppm
|
|
Arsenic (as AS 2 O 3 )
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Not more than 1ppm
|
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Lead(Pb)
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Not more than 0.1ppm
|
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Viable counts
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Not more than 300CFU/g
|
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Coliform organisms
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Negative
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Yeast and molds
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Not more than100 CFU/g
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