Answer / chmreddy

“Vacuum” denotes exposure to a pressure of less than 20 mm of mercury (2.67 kPas), unless otherwise indicated.

What are usp limits for total impurities,unknown impurity

1 Answers   Dr Reddys,

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which effect is mainly responsible for chromatographic separation when silica is the statinary phase at TLC? thanks in advance

1 Answers  

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principle of AAS & its uses ?

1 Answers   Auriga,

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How to define samples weight in moisture content

1 Answers  

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what is the diference between spectroscopy and chromatography

2 Answers   Cipla, PharmChem, Reliance,

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Why we use methanol as solvent in kf standardisation. Why not other solvent?

2 Answers   Caplin Point, Epione Labs, Hetero,

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how to prepare low ppm solution from high ppm solution ?

1 Answers  

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Give me details about dissolution , with name ?

1 Answers   EPCA,

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why IR graph or spectra comes down ? Any reason

4 Answers  

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Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.

1 Answers  

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how we can identify the impurity is coming below loq at transfering site?

0 Answers  

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

0 Answers   Zim Laboratories,

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