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Why pyrene is also use for calibration if detector
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Bcoz. It gives higher absorbance band ,lambda max 373 nm .rather than caffeine. That's why
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How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.
How to set analyticl specification for combination products?
How did you conclude that when stressing a compond, all degradation products have eluted in chromatogram?
Why using 0.5% acetone in methanol mobile phase for HPLC Gradient performance check.
What is the use of Holmium (III) Oxide???
why require to add enzymes in capsules dissolution only? is it require to tablet also?
what is the difference between loss on drying in ordinary oven technique and vacuum oven technique
4 Answers Divis Laboratories, Ranbaxy,
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
In Number of Theoretical Plates (N) = 16 (tr/w)2. where tr: retention time, and W: peak width. My Question is here in formula what is 16.Can u explain briefly? ---Veerabhadrarao.M
3 Answers Micro Labs, Richter Themis, Sun Pharma,
What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?
difference between record & document ?
why we calibrate ph meter and balance daily.....but hplc and uv requires quaterly?
Organic Chemistry 
