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we can use expired sample for validation and analyst qualification?
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What is difference between" LOD" AND "VACCUME LOD"
Why we inject a standard 6 times for Related substances by HPLC and 5 times for Assay?
in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result
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2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.
in hplc chromatogram started from left to right and in uv spectrum started from left to right
What is the optimum period of storage of indicators?
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HPLC Calibration was done in Reverse Phase, but not in normal phase why explain?
How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?
what are the standard methods for HPLC?
A ha tc is actual defination of retention time?
Organic Chemistry 
