Why do we use KMnO4 in the test of control of obsorbance ?
and why do we take specific quantity i.e 57-63mg?
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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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How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?
0.1 atom gram of the unknown element( X)reacts with 2.4 gram of O2 to produce the oxid product . can you tell us, what is the oxid formula ? a) XO b)X2O3 c)XO2 D) X2O4
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