Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is lod and loq

3 7550

what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

Wockhardt,

2151

What is the b/W dead volume and dwell volume ?

2 10965




why r u using hplc grade solvents

4 8476

Why do we use sodium salicylate for Calibration TLC Cabinet U.V Lamps

Matrix, Spar Labs,

2 14320

How do you show that equal quanitities of two isomers provide the same response using a PDA

1 3764

what is GLP? Which industries it requried?

GVK, Aurobindo, AXIS Clinicals,

1 9886

How can we separate Urea & semicarbazide in single HPLC method ?

2 4482




What is the calibration procedure for Malvern MS2000 particle size analyzer and acceptance criteria?

Reddy Labs,

2 2642

why we can use only 4 and 7 and 9 buffers in pH calibration

Cipla, Chola,

1 2595

How to do regeneration of Metacarb Pb plus column?

1283

we calibrate HPLC once in 6 months while iam doing calibration i came to know that calibration was failed. then how can i justify that the samples analyzed on the system during this 6 months was wright? how can i forward in to the next step for those batches?

5 8308

What is the solvent/material used to balance spirit level in analytical balance?

Glenmark, MMC Health Care,

4 8614

why plane of polarized light rotated by opticaly active compunds?

Glenmark,

1 4206

why do we use around only 60 mg of K2cr2o7 in the UV calibration -control of absorbance test?

Reddy Labs,

3 9975


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Un-Answered Questions { Analytical Chemistry }

How we can determine water content in piperazine

919


WHY given much noise PDA dector then VWD Dector

698


As per ICH related substances stability trend limit from initial to shelf life

1807


why we are using benzene, anyline in acetic anhdride assay titration method?

846


Basic principle of ESI?

866






We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

299


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

1116


AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

874


What is Band broading effect explain

599


what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

2323


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

979


why octanol used to determine the partition coefficient ?

1007


what are the standard methods for HPLC?

1531


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

7151


what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

2225