Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what are peak purity,peak purity index,peak thresold

2 11172

1)why use benzophenon,uracil in hplc calibration. 2)why use sucrose in polarimeter calibration. 3)what is S/N ratio, noise and drift in hplc 4)how we can find lod and loq in method validation

1 10101

What is (Q) point dissolution?

Cipla, Macleods,

6 17555




Why we are using K2Cr2O7 for control of absorbance in UV?

2 9438

1 why polyesterene film used for ftir calibration ? 2 why k2cr2o7 is used for control of abs in uv ? 3 why holmium oxide used for control of wavelength in uv

3 8808

what is the principal of malvern particle sizer & its used in pharma industry

3 5323

what is the difference between system precision and method precision?

Teva Pharmaceuticals,

3 19800

In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?

Teva Pharmaceuticals,

2 4567




what is difference between moisture contents and water contents ?

Cipla, Hetero, USM,

12 42335

In GC, What does 'Column condensation test' mean by?

Reddy Labs,

2 7512

same sample on two preapration gives differnt result during hplc analysis

3 4574

what is titrent,& titrate

Graviti Pharmaceuticals,

2 8701

Why we are using a Kf Factor range 4 to 6

7 30297

What is difference between Chromatographic purity and Related substances analysis?

3 16339

Why we are using the methanol in Kf titration?

Reddy Labs,

6 14204


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

What is the main difference between ODS1 and ODS2 Hplc column.

1490


WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

968


are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????

644


In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

1890


What should be the level/ Percentage of Arsenic in Arsenic free zinc.

952






How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

1775


What is third generation HPLC Columns?

599


what is difference between zero air gas and o2 gas

5451


Qc interview questions

240


how can give the expiry period and restadardisation of volumetric solution

1209


How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1164


What is the difference between spectro meter and spectro photo meter?

8180


why we use sodium salicylate in uv light calibration at TLC chamber

4683


For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

794


iam usig ph buffers merk. manually how to prepare ?

910