Answer Posted / samba siva reddy.p

detector checking with caffiene soln bcz caffiene have 2 max and 1 minima wavelenths,we inject std stock soltn(caffiene soln) with diffrent wavelengths.
201 to 209= 205(maxima)
241 to 249=245(minima)
269 to277=275(maxima)
limits+ or -2

If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

2240

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What is the purpose of octyl silane columns?

4245

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UV and PDA detector, which have less signal to noise ratio?

1082

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Tell me about analytical method validation in QC

6124

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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.

2170

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How doing qbd practically?

915

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1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1791

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how pda detector works over uv?

693

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Qc interview questions

1694

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how we can identify the impurity is coming below loq at transfering site?

808

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what is definition of validation? which components are followed give detail?

2292

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for inorganic molecules require to do RS, Assay and disso?

668

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Principle of single pan analytical balance

5084

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For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

4002

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Why potassium dichromate is used in calibration of uv?

1922

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