Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why sucrose is used for polarimeter calibration

4 30259

why 0.005 M sulphuric acid is used to calbrate spectrophotometer and why caffiene is used for calibrating hplc

Torrent Pharma, GVK,

2 15774

why we use caffeine for hplc calibration?

5 15150




what is polarity and how to calculate

Reddy Labs,

2 8462

How to calculate the maximum loaded sample concentration in HPLC column?

2 7524

What is the difference between HPLC and GC?

3 15168

Why linearity of detector performed in HPLC calibration

Cipla, Intas,

2 11016

how to start the method development of Dissolution and related substances.

Apex,

1 8332




what is the criteria for choosing capillary column in GC??is it dependent on sample load?

2 4418

When we calculate Impurity against impurity std.solution and when we calculate impurity against diluted standard with applying RRF?

Torrent Pharma,

2 7771

What is discriminating media? How can u justify/select that which media (pH etc...)is suitable for your dissolution study of your compound?

Natco, SUN,

5 21044

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

Natco,

5248

How can I develope method of dissolution by HPLC OR UV

954

Give me details about dissolution , with name ?

EPCA,

1 1461

As per USP what is RSD limit of volumteric solution of three replicate analysis

Orchid,

10 15734


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Un-Answered Questions { Analytical Chemistry }

How to choose the which salt is suitable for mobilephase

1653


While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

962


Explain the relations between number of carbon atoms in alkanes and retention time ?

607


what is the purge flow & how to calculate

1159




1027






what is the disso medium for tropsiun chloride

884


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

259


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1258


why we use a particular hplc column for a particular compound give reasons?please

1491


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

637


mahagenco syllabus for the post of chemist

4881


Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1444


Did anybody have method for acetyl cysteine effervescnce tablet

877


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

336


why we are using benzene, anyline in acetic anhdride assay titration method?

807