|
Appearance
|
Clear solution
|
|
Colour scale
|
Max 10 APHA
|
|
Assay
|
Min 30% w/v
|
|
Acidity
|
Max 0.5 ml N%
|
|
Organic stabilizer
|
Max 0.05%
|
|
Non-volatile matter
|
Max 0.005%
|
|
Heavy metal (as Pb)
|
Max 0.0005%
|
|
Chloride (Cl)
|
Max 0.0005%
|
|
Nitrogen compounds (as N)
|
Max 0.002%
|
|
Phosphate (PO4)
|
Max 0.0005%
|
|
Sulphate (SO4)
|
Max 0.0003%
|
|
Arsenic (As)
|
Max 0.00005%
|
|
Copper (Cu)
|
Max 0.00001%
|
|
Iron (Fe)
|
Max 0.000025%
|
|
Lead (Pb)
|
Max 0.00005%
|