Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

Granules,

1802

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1550

what is peak purity and its formula

1 2284

Why potassium dichromate is used in calibration of uv?

1929

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

1423

What is difference between known and unknown impurities

Sun Pharma,

1 2425

What is the difference between known and unknown impurities?

1 3064

why we are using hexane in calibration of number of drop per mL

1669

Why to use propyl paraben in HPLC gradient calibration

Glenmark,

7328

Why potassium dichromate was using in Uv calibration?

1 3582

%lod always grater than %water content for same product??

1 2533

We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1839

How to define samples weight in moisture content

1 2427

What is AV value in test uniformity content ,describe calculation

Lupin,

1 3182

Why perchloric acid used for potentiometric titration

2636

Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

2135

Which parameters require to do in tech transfer?

687

What is rs test why we are performing rs test?

1812

cefoperozone and sulbactam inj. hplc test method

2649

how can give the expiry period and restadardisation of volumetric solution

2536

if rsd failed then what require to do?

771

CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

1154

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

2399

Did anybody have method for acetyl cysteine effervescnce tablet

2207

In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

2182

in dissolution why pool sample needed? in which type of drug pool sample need?

3137

sop of a uv visible spectrophotometer double beam elico model

5870

if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

636

What is the diffrence in japan mkt requirement in analytical method validation over US?

681

What if impurity area in control sample coming more as compared to LOQ level of impurity ?

1557

For More Un-Answered { Analytical Chemistry } Questions Click Here