why we are calibrating autopolarimeter with quartz control
plates



why we are calibrating autopolarimeter with quartz control plates..

Answer / jayapradhagreddy

because it is thermally stable
prevention of recemisation

Is This Answer Correct ?    1 Yes 0 No

Post New Answer

More Analytical Chemistry Interview Questions

what is poarimeter, why it is used in pharma,and explain briefly about polarimeter?

3 Answers   GVK,


What is control room temperature and which guide line says?

0 Answers  


Explain about Low pressure gradient and High Pressure gradient systems in HPLC?

4 Answers   Mylan, Orchid, Roshanico,


what is the difference between the Purity and Potency of drug substance

1 Answers   Divis Laboratories, Graviti Pharmaceuticals,


Why only lead standard solution is uesd to perform heavy metal test.

2 Answers   Reddy Labs,






My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

0 Answers  


how to prepare low ppm solution from high ppm solution ?

1 Answers  


What is colimn selection Criteria in HPLC analysis?

4 Answers  


how to pepare 6.8 pH phosphate buffer

10 Answers  


Why we perform the ir analysis?

3 Answers   Sequent,


How much sample concentration should i inject against diluted standard in related substances for drug product in hplc analysis

1 Answers   Apotex,


why 6 tablets use for dissolution

1 Answers   Cadila, IPCA, SUN, Teva Pharmaceuticals,


Categories
  • Organic Chemistry Interview Questions Organic Chemistry (342)
  • Inorganic Chemistry Interview Questions Inorganic Chemistry (123)
  • Analytical Chemistry Interview Questions Analytical Chemistry (1387)
  • Physical Chemistry Interview Questions Physical Chemistry (62)
  • General Chemistry Interview Questions General Chemistry (478)
  • Chemistry AllOther Interview Questions Chemistry AllOther (190)