how do we get usp reference standard potency?
Answer Posted / sachin
When you purchase any reference std from any gov. office they will provide us their potecy in certificate along the std.if it is not mentioned then consider 100% potecy.
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In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
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