Why to use propyl paraben in HPLC gradient calibration

7509

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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?

1799

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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

1918

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Different between back cross and test cross

1466

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How many types of impurites in Related compound test?

1612

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what is NIR wave length

1438

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how to calculate the potency of gentamycin sulfate

1395

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Why perchloric acid used for potentiometric titration

2696

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why do biologist study protostomes

1261

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Which instrument used fbd fingerbag pore size identify purpose

1570

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In which forms arsenic impurities present in drug.

1486

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different between dicot & monocot with example ?

1486

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What is the Formula for coreletion coefficient in plhplc calibration

1847

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How to calculate coreletion coefficient

1725

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Which liquid use fingerprint

2027

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