how to prepare working standard in our laboratory aganist
reference standard ?
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Answer Posted / psreddy
1.Select the raw material from the latest consignments and
identify which consignment is closest to 100% purity
2.Following tests compared with reference standard.
a.Description
b.Identification
c.Loss on drying/water content
d.Assay (Thrice)
3.Acceptance criteria :
i.The % RSD of the values obtained by both
chemists is NMT 2.0%.
ii.The % RSD of the values obtained by
individual chemist is NMT
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