today i am doing calibration of HPLC. when i inject the
blank it was going on -ve.(bleow then zero) why?
Answers were Sorted based on User's Feedback
Answer / b.gangatharan
This is due to improper sonication of mobile phase and improper stabilisation of column.
Regards,
B.Gangatharan
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / sudheer kumar m
may be mobile phase was not stable in that particular
method. so condition the column with mobile phase and re inject.
| Is This Answer Correct ? | 2 Yes | 2 No |
Negative peak simply indicate that your mobile phase
absorbs UV light.So use only HPLC grade solvents.Even with
HPLC grade solvents you get the negative peaks you system
might not be working properly.
Regards
M.KIRAN REDDY
| Is This Answer Correct ? | 2 Yes | 7 No |
What is boiling point ? & Explain.
what is the conductivity of hplc grade water?
what is LC - MS ? What its wide use in cro/pharmaceutical Industry
what is the difference between capillary and glass column in GC
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
0 Answers VHB Medi Life Sciences,
What is the use of tlc and hplc? And when and where use?
What is the procedure for investigation of an OOS (Out of specification) results?
4 Answers Biocon, Dr Reddys, Reddy Labs,
one gram of which below elements has the most atoms in its? a) H b) D C)T D) He
What will be the effect on HPLC analysis result if three mobile phases given separately through three valves and same proportion mixed together and given by one valve?
In specificity what parametrs are consider why that parametrs
1 why polyesterene film used for ftir calibration ? 2 why k2cr2o7 is used for control of abs in uv ? 3 why holmium oxide used for control of wavelength in uv
What is the difference between Normal phase method & Reverse method in HPLC ? Define application of both method.