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which chromatographic technique is used for softening hard
water?
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How can we Qualify a unknown impurity by HPLC
Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong?
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What is the requirement for brazil in the analytical method vslidation comparr to ich?
what is mean by assay?
what is the principle of assay of sodium nitrite?
Which buffer is used for LC/MS mobile phase & at What Conc.
In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?
For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?
why we are using 6 dosage units in dissolution, and why we are using 6 tablets in disintegation test.is there any scientific reason beyond 6?
why we are adjusting the ph in buffer solution preparation
What is the importance of sulphated ash test?
Why we are use 0.005M Sulphuric acid, in control of absorbance performance test UV Spectrophotometer calibration
Organic Chemistry 
