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 mean by least count balance?
what is MCG dilution in HPLC & GC analysis
1 Answers Amoli Organics, Cipla,
how to calibrate AAS ? give me the procedure?
How to calculate LOD & LOQ in HPLC Validation Method
14 Answers Dr Reddys, GSK GlaxoSmithKline, Reddy Labs, Reliance, UIS,
Why Ethanol is Used for Standardization of GC Head space?
0 Answers Anuh Pharma, Cipla, Finar Chemicals, Hetero, Sun Pharma,
how many types of Proceing methods?
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
WHY KBr is used in IR Spectroscopy
In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.
Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?
What is the use of tailing factor ?
why we get only one peak in assay by hplc but in rs by hplc get more peaks