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Analytical Chemistry Interview Questions
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in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

Dishman,

930

why we use polystyrene film for ftir calibration?

Rakshit Drugs,

4 11628

WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

GVK,

1403



why do we adjusted ph in the mobilphase

Cipla, Reddy Labs, Dr Reddys,

9 16495

How to develop the method when we have very low amount of impurity?

2 5573

If we have 120 minutes run time method for HPLC and you wan to decrease the Run time so what should you do??

 6 8610

Wath is the differenc between two column HPLC wich have the samme support , lenth , pore size, etc.. But different name .for exemple : Spherisorb / lichrosorb

NDA,

2 5192

WHAT IS PVT TEST IN DISSOLUTION TEST , WHAT IS PVT SIGNIFICANCE AND HOW IT IS PERFORMED ?

 1 5139





 1076

How you will select column for HPLC development depends on nature of compound and how it will work explain in brief?

 3 6895

What is the role of SO2,I2, Methanolic hydroxide and any base in Karlficher titration

Medley Pharmaceuticals,

2 6066

The boiling point of 1,3 butadiene is -4.4 DC & the boiling point of Pentane is 36.1 DC. Then how come Pentane elute before 1,3 BD in GC analysis?

 1 3168

What is Arsenic Test?

Flamingo Pharmaceuticals,

1216

What is the difference between Optical rotation and Spcefic optical rotation

IPCA, Matrix,

2 8598

why we use sodium salicylate in uv light calibration at TLC chamber

Lee Pharma, Aurobindo,

1 5052

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Un-Answered Questions { Analytical Chemistry }

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

693

What is Band broading effect explain

599

Colorimtry

252

How you develop a method in HPLC?

1315

Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

290




Why potassium dichromate was using in Uv calibration?

518

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

1513

for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

3655

EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

1353

What is method validation in quality control

2431

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

1162

what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

3118

what is the origin to prepare standard operating procedure

986

sop of a uv visible spectrophotometer double beam elico model

4201

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

2034

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