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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

if v use HELIUM & ARGON instead of NITROGEN as a mobile phase what happen in GC SYSTEM ?

Cipla, Reddy Labs,

5 9985

what is relationship between absorption and transmittance in u.v.?

Orchid,

11 26172

why we are using polystyrene film for calibration of I.R spectroscopy?

Abbott, Andhra Organics, Intas, Kemwel, Reddy Labs, RRR, Veritas, Zydus Cadila,

12 54808

why we cannot analysis below 200nm in u.v?

2 12320

what split ratio in gas chromatography.

Cipla, Glochem,

9 41804

significane of detector wavelength accrucy in calibration of hplc

1 4704

signifcance of detector lenearity in calibration f hplc

3 6474

injection volume accruacy test i calibration of hplc

HLL,

3 15157

verification of wave number why you are use in IR calibration

2 5935

control of resolution in calibration of IR

3 7345

defination of wavelength & wave number

4 10794

what is LC - MS ? What its wide use in cro/pharmaceutical Industry

Ranbaxy,

4 7829

what is difference between IR & FTIR ? how we calibarte both ? I want to know the procedure.

Cadila,

7 85743

which brands HPLC COLUMN available in market

11 16685

calibrtion procedue of LC-MS

GVK, Matrix,

1681


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Un-Answered Questions { Analytical Chemistry }

What are modes of quantification in related substances

1300


What is importance of pH in the Heavy metal test and How it effect on the test results?

1361


Why we check moisture,ash & AIA in product

951


Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1868


why does used dry caffien in HPLC calibration?

1116






how can give the expiry period and restadardisation of volumetric solution

1671


sop of a uv visible spectrophotometer double beam elico model

4706


How do we fix the sample concentaryion in hplc method development?

240


How to fix the sample conc. in Related substances test by HPLC?

200


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

1687


What is the diference between residual solvents and organic volatile matter

1071


how to calibrate hplc & gc

3553


what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

1663


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

717


What are the primary considerations in extractables and Leachables ?

1393