Answer Posted / govind

Injector pressure is high because the sample vapour are
expansin in the glassliner.

WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?

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pharma industries oriented

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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.

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how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

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what is mean by nitrosamine impurities?

1019

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for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

5990

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what is mean by extactable and leachable study?

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how to calibrate hplc & gc

4463

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What is similarity factor?

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what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2630

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inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

662

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why we use a particular hplc column for a particular compound give reasons?please

2686

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Tell me something about Vitamin A test method by HPLC

2630

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Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

689

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If vendor having more imp than monograph then how to proceed? and how to set spec?

848

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