Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

i set electrode to 7 buffer than i used it to check 4 buffer and 10 buffer if the results are not as expected than is it better to set the buffer again to 4 buffer or is there any other method available please let me know ...

Glochem,

2 4461

How much is the standard area for glc analysis

883

function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

DRL,

1162




what type of compounds do we see lod @ wat type compounds do we see m.c

Orchid,

3 5694

How can the GC or HPLC method is selected to determine the impurity profile in drug product?

Ajanta,

1 5302

How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

Cipla, Rampex Labs,

2360

What the difference in loss on drying and residue on ignition

2 20147

Why irmoisture balance is used for corrugated box moisture testing

Leiutis, Lupin,

996




why we are used 4,7,9,2 buffers for the ph calibration

Aurobindo, Enaltec Labs,

4 14158

In case of HPLC coloums what is the difference Between C8 & C18 coloums & how can we select difference type of coloums like Inertial ODS , Hypersil BDS , ODS etc.?

MSN Pharma,

4 24377

Is sonication essential in solubility testing of a drug substance?

Aurobindo,

6 10380

what is different between volumetric solution and general solution

1 13516

what is primary solution and secondary solution

2 5111

what is RI detector Cut-off Value

Mylan,

1 7198

In Related Substances Test how we can reside the limit of impurity ?

MSN Pharma,

2 8188


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Un-Answered Questions { Analytical Chemistry }

Which std. used for standrdisation of ZnSO4?

987


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

522


Basic principle of ESI?

786


How to start the dissolution development for unknown tab?

252


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

2245






in gas chromatography what is the difference between gas flow rate and average linear velocity ?

947


Why Ethanol is Used for Standardization of GC Head space?

2563


WHAT IS THE USE OF STARTER ?????????

1040


why disodium tartarate used in karl-fischer instrument ?.

651


how to calculate corelation coefficient in G.C Calibration? what is the calculation part?

909


In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

677


in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

863


what is the identification test of volatile substance? what is volatile compound?

930


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

893


WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

809