Why to use propyl paraben in HPLC gradient calibration

7598

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if one drug is acidic in nature and the other drug is basic in nature, e.g. desloratadine is soluble in acidic environment i.e 0.1N HCL whereas Montelukast Sodium is soluble in basic environment i.e. .2% SLS. How can we choose a common media for there Dissolution?

1833

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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

1971

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Different between back cross and test cross

1503

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How many types of impurites in Related compound test?

1665

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what is NIR wave length

1469

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how to calculate the potency of gentamycin sulfate

1457

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Why perchloric acid used for potentiometric titration

2737

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why do biologist study protostomes

1298

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Which instrument used fbd fingerbag pore size identify purpose

1616

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In which forms arsenic impurities present in drug.

1523

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different between dicot & monocot with example ?

1525

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What is the Formula for coreletion coefficient in plhplc calibration

1884

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How to calculate coreletion coefficient

1772

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Which liquid use fingerprint

2097

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