Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how does h2so4 prevent oxidation of mohr salt before it is titrated?

1 2284

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

1 1948

in HPLC injection volume is increase ,R.T will increase ?

Claris Lifesciences,

5 8003

How to caluculate the RRF and correction factor in hplc

Alkem Labs, Aurobindo, Rakshit Drugs, SDLPL,

1 12360

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 3545

what is the most common FT-IR source used for the MID&Near IR regions?

Dr Reddys, Piramal Enterprises,

1 4339

How much carbon loading in nomalphase columns?

5 5570

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 4168

what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.

Atul,

1 1768

Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2097

Why we use methanol as solvent in kf standardisation. Why not other solvent?

Caplin Point, Epione Labs, Hetero,

2 5634

if relative response factor is 1.07, to select how much value

Natco,

1 3598

What is the use of ELSD in HPLC?

Anthem,

3 5013

What is difference between FID and TCD in gas chromatography

Cipla, VPCPL,

1 8989

What is the difference between high pressure gradient and low pressure gradient in hplc?

Cipla,

1 6232


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

what is mean by extactable and leachable study?

480


why does used dry caffien in HPLC calibration?

1452


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

3771


what is the structure of DOWEX-50

4827


Which are the diffrent grades of api in pharma?

231






please explain about aluminium hydroxide assay

629


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

2409


what is mean by nitrosamine impurities?

443


in which situation require to change rs specification?

200


what is partion and column chromatography

1729


why multimedia dissolution require to do?

233


how you start RS method development when for new product?

206


UV and PDA detector, which have less signal to noise ratio?

569


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

1810


inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

211