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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

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

3399

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

1010

Qc interview questions

Apotex,

1073

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

2 3043

why are measure gas flow " ml " in Gas chromatography

981

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

2 3375

How to start the dissolution development for unknown tab?

IPCA,

967

what is DIPE limit in residual solvent?

1 1973

What is control room temperature and which guide line says?

965

What is the pH of water?

Zydus Cadila,

1 2485

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

Zydus Cadila,

1 2179

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

918

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 1462

What is difference between chemical Assay and Hplc assay?

Lee Pharma,

2 3414

Near infrared Principle

1 1615


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Un-Answered Questions { Analytical Chemistry }

what is the origin to prepare standard operating procedure

1614


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

1318


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

1137


How do we fix the sample concentaryion in hplc method development?

485


How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

1743






Difference between the quantitative analysis and qualitative analysis?

454


Why potassium dichromate is used in calibration of uv?

1130


Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

1867


what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1332


how you determine moist.of NaOH sol or NaOH flacks

1612


Tell me about analytical method validation in QC

4894


WHY given much noise PDA dector then VWD Dector

1325


which situation gc hs and gc als require to use?

103


why cone formation during dissolution?

109


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

965