What is the difference between Assay and Purity?

968

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Can we quantify bound water by KF titrator ?

957

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

1161

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Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?

1122

---

Why to use propyl paraben in HPLC gradient calibration

6066

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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?

1233

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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

1308

---

Different between back cross and test cross

912

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How many types of impurites in Related compound test?

1092

---

what is NIR wave length

932

---

how to calculate the potency of gentamycin sulfate

817

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Why perchloric acid used for potentiometric titration

2151

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why do biologist study protostomes

779

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Which instrument used fbd fingerbag pore size identify purpose

1016

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In which forms arsenic impurities present in drug.

902

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