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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is dwell volume in HPLC?

Aurobindo, Cadila, Strides, SUN, Sun Pharma,

2 7775

what does pH stand for?

Orchid,

4 8294

Definition of beers_ lamberts law

Aarti Industries, Agio Pharmaceuticals, Emcure, Supriya Lifescience,

4 8155

Why monograph of hplc coming upperside of drift but in IR monograph coming in drift side?

1 4077

Why a1% value is used for some product ? What is the criteria for selection a1% value ?

Zim Laboratories,

2289

Why the ph limit (1_14) Is used?

Cipla,

3 8216

What is cut off value of solvent used in hplc

Pfizer,

1 6488

How to calculate mass balance in RS after degradation

Reddy Labs,

1 5977

if out of two set of results of moisture analysis first 1 is passing, second one is failing, is it oos ? or vice a versa first 1 is failing and second one is passing. for information mean value to be reported and in mean value the substance is ppassing, is it oos or normaal mean value to be considered?

JBCPL,

1 3609

Can we interpret accuracy from linearity in method validation?

Dr Reddys, Lupin,

1 2947

What is aggregate and fragments in SEC?

2060

how pyridine can be analysed other than GC?

1 4182

What is the calibration of uv process and preparation

Aurobindo,

1937

How to prepare 1000ppm methylene blue solution

2 21094

Identify problem faced when mass spectroscopy is used with HPLC system ?

College School Exams Tests,

1802


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

833


how to get accurate result for Residue on evaporation in purified water

1579


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1985


Why six unit used for precision?

1274


Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

651


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

1633


How to calibration of the uv spectroscopy and its test?

1143


in OSD forms require to use gas chromatography?

777


What is control room temperature and which guide line says?

1580


How to determine water content of bis tetrazole amine mono ammonium salt

3423


What is a difference between potency and purity?

1156


What is third generation HPLC Columns?

1934


how you fix the limits of impurities?

786


Why Ethanol is Used for Standardization of GC Head space?

4156


What is gelatinization?

1573