Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong? 

5 Answers   Claris Otsuka, Ranbaxy,

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Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

0 Answers  

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Explain about empower software of analysing?

1 Answers   DRL,

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what is the identification test of volatile substance? what is volatile compound?

1 Answers  

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Why chromic acid wash is not recommended by USP for glassware cleaning?

1 Answers   Lupin,

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please explain about aluminium hydroxide assay

0 Answers  

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Why Urasil and Caffeine use for HPLC wavelength accuracy calibration. which is most suitable, Why? other than these which can be used?

7 Answers   Cipla,

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For LOD and LOQ determination which method is accurate? (slopemethod or s/n ratio method)

4 Answers   Reddy Labs,

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for which type of applications gas chromatography is used?

2 Answers  

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Is it necessary to validate both assay and related substances for usp official methods for products.

6 Answers   Apotex,

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why 0.02% solution toluene &noHexane using in uv calibration?

1 Answers   Graviti Pharmaceuticals, Orbit Pharma, Ranbaxy, Vimta Labs,

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When we calculate Impurity against impurity std.solution and when we calculate impurity against diluted standard with applying RRF?

2 Answers   Torrent Pharma,

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