how pda detector works over uv?

693

for inorganic molecules require to do RS, Assay and disso?

668

WHAT TYPE OF QUESTION ASK FOR POST SENIOR TECHNICAL ASSISTANT IN DRDO

8032

Write the mathematical form of nernst equation and give one application? : Electrochemistry Corrosion

920

Explain what is the net charge of a non-ionized atom?

990

Explain the difference between the law of multiple proportions and the law of definite proportions?

966

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

1546

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2669

How is arsenic produced?

1011



2260

Explain what are the hydrocarbons?

1010

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

796

how you start the solubility study?

766

How to synthesize methylene bisthiocyanate using CH2Cl2 and NaSCN?

2913

What is the difference between chromatographic purity and related substances?

1295