Answer Posted / guest

according my experience and knowledge based

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

9884

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Why irmoisture balance is used for corrugated box moisture testing

2449

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If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

906

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How to set specification of assay, fisdolution and related substances?

931

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how to develop the icp ms method? Application of icp ms?

848

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how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

2362

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what is diffrence between specificity and selecivity?

835

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why require the ph, buffer during hplc mobile phase?

919

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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1651

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what are the guidelines for analytical method validations?

1149

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What is related substance by HPLC impurity limits as per USP?

1153

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mode of absorption in alimentary canal?

2433

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Why only 1.2 million lux hours require in photostability study?

1098

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How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?

791

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Basic principle of ESI?

2205

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