Answer Posted / m. balaram naidu

TRI ETHYLAMIINE (AND) ORTHO-PHOSPARIC ACID ARE
USED pH ADJUSTMENT PERPASE

BECOSE
1)GOOD RESOLUTION
2)PEEK SHAPE

WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

2142

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

1111

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what are risk assement in the analytical qbd?

768

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We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1912

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How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

4285

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why we are using hexane in calibration of number of drop per mL

1742

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Why to use propyl paraben in HPLC gradient calibration

7500

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what type of question will ask in the interview of lab chemist.

3325

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why require to do water content for drug product?

843

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WHY given much noise PDA dector then VWD Dector

2105

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how require to fix the linearity and accuracy cincentration range?

1677

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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,

2611

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we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

1874

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

746

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in OSD forms require to use gas chromatography?

843

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