Why we use holmium oxide,perchloric acid for uv/vis
calibration
Answer Posted / ragni vora
this is because holmium oxide and perchloric acid does not absorb uv/vis i.e. it is transparent to uv/vis region hence it can also be used as an background
| Is This Answer Correct ? | 13 Yes | 26 No |
Post New Answer View All Answers
from where i get mortar pastle for glass bottle crush? it's required for testing of it?
what is mean by dissolution biowaiver study?
How can the GC or HPLC method is selected to determine the impurity profile in drug product?
What is aggregate and fragments in SEC?
What is gelatinization?
Why perchloric acid used for potentiometric titration
cefoperozone and sulbactam inj. hplc test method
Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .
What is intact assay method development.....?
How can we calculate offset value pH measurment
How to set specification of assay, fisdolution and related substances?
Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?
in which situation ion pair require to use?
in dissolution why pool sample needed? in which type of drug pool sample need?
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