what is the difference between loss on drying in ordinary oven technique and vacuum oven technique

4 Answers   Divis Laboratories, Ranbaxy,

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What are the concentration limit for class-1 residual solvents in ICH ?

1 Answers   Lupin,

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On which pharmacopoeia basis we can calibrate instruments like HPLC,GC,UV,DISSO,IR etc...

9 Answers   Cipla, Laurus, Micro Labs,

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Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

0 Answers   Reddy Labs, Vimta Labs,

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why require the ph, buffer during hplc mobile phase?

0 Answers  

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Hello Dear all; I have a technical question related to analytical Chemistry, I have a sample of (40% w/w) Ferric Chloride solution (for water treatment purposes which consist a little portions of Ferrous Chloride and Hydrochloric acid. I need to know the methods to determine the percentages of each Ferrous Chloride and Chloride acid. Also I want to make sure that this solution is truly (40% w/w). So ANY CLUE !!! Thanks in advance.

2 Answers  

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why we are using in ph calibrations ph4,7,9.2 buffers only?

5 Answers   Reddy Labs,

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pda detector mechanism?

1 Answers   DKR, Teva Pharmaceuticals,

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Why sodium lamp is used in polarimeter?

1 Answers   Aurobindo, Micro Labs, Mylan,

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Is sonication essential in solubility testing of a drug substance?

6 Answers   Aurobindo,

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Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?

3 Answers  

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Shall i use a same hplc column for two different products.?

3 Answers  

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