What is the difference between drug product and drug substance?

1 Answers   Apotex,

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Why dst is used in kf for factor determination less than 1

4 Answers   Reddy Labs, Sun Pharma,

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in pentoperazole capsules usp why assay value is substract from dissolution

1 Answers   Ranbaxy,

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Why a1% value is used for some product ? What is the criteria for selection a1% value ?

1 Answers   Zim Laboratories,

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Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1 Answers   Apex, BNM, Ranbaxy,

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Why we compare unequal concentrated solutions in heavy metals test. For example comparing the test solution with 1 ppm lead standard and telling it's less than 20ppm?

1 Answers   Micro Labs, Mistair,

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What is vial equlibriation in Gc?

1 Answers  

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What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

1 Answers  

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How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

1 Answers  

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what is the need of calulation of RRF of impurity in HPLC analysis?

9 Answers  

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cefoperozone and sulbactam inj. hplc test method

1 Answers   Graviti Pharmaceuticals,

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Plz explain the formula in uv calibration =Absorbance of the sample ( x ) x 10 x 1000/Weight of potassium dichromate taken in mg

1 Answers  

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