Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is diffrence between extractable volume and deliverable volume? Answer pls

1131

why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

439

Qc interview questions

Apotex,

415




What is difference between" LOD" AND "VACCUME LOD"

2 1539

why are measure gas flow " ml " in Gas chromatography

447

Difference between standard operating procedure and standard test procedures in pharmaceutical industry

2 1116

How to start the dissolution development for unknown tab?

IPCA,

392

what is DIPE limit in residual solvent?

1 846




What is control room temperature and which guide line says?

424

What is the pH of water?

Zydus Cadila,

1 1336

Why we use buffers Acetate for pH 4.5 & phosphate for 6.8 and not vice-versa?

Zydus Cadila,

1 1020

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

354

Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.

1 549

What is difference between chemical Assay and Hplc assay?

Lee Pharma,

1 1363

Near infrared Principle

1 692


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Un-Answered Questions { Analytical Chemistry }

How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

2651


Difference between hlaf and rlaf

774


Why we check moisture,ash & AIA in product

576


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1618


What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

2602






how you determine moist.of NaOH sol or NaOH flacks

1111


sop of a uv visible spectrophotometer double beam elico model

4264


Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

28


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

1104


What are the primary considerations in extractables and Leachables ?

1074


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

1070


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

381


how will you do the prep for unstable componds?

728


about method developement in hplc

456


we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

542