Answer / loges

in colourless compond seperatiion each 100ml fraction
collected seperately and using Thinlayer chromatography
check the seperated fraction by using UV lamp

Answer / dipti

i colomn chromatograph, if colorless compound has 2
seperate then, another compound is used which is colled as
coloring compound, has the ability to give color with the
compond has to detect.

Answer / trevor molyneux

There are number of possibilities for identifying the
eluents from the column. Try passing the eluent through a
UV beam if any of the eluents fluoresce. You could also
pass the eluent through a set up with an IR source and
detector or a refractive index measuring instrument. Any
of these alternatives could be used quantitatively.

Answer / k.madhu

WE R SEPERATED with hptlc method and some pigments is
present so i seperate colorlees

why we prefer kbr for ftir than kcl?

5 Answers   Aurobindo,

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pda detector mechanism?

1 Answers   DKR, Teva Pharmaceuticals,

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What is the difference between Paddle and Basket Why we are using Basket or paddle in dissolution.

7 Answers   Apotex, Cipla, GSK, Intas, Zydus Cadila,

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While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

0 Answers  

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HPLC Calibration was done in Reverse Phase, but not in normal phase why explain?

11 Answers   Cipla, Orchid,

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why hexane is used for FID calibration in GC

1 Answers   Glochem,

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how require to set assay concentration for standard and sample?

0 Answers  

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WHY POTASSIUM HYDROGEN PTHALATE IS USED FOR PERCHLORIC ACID? What is difference btw UV detector & RID detector? what is dissolution? What is unit of KF? what is the significant of pH in HPlc?

1 Answers  

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How do you give training to a new chemist

3 Answers   Reddy Labs,

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Is sonication essential in solubility testing of a drug substance?

6 Answers   Aurobindo,

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what is the film thickness in ftir

8 Answers  

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solvents used in NMR

2 Answers   Laurus,

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