why there is a need of optical activity & specific optical
activity measurement by polarimeter
Answer Posted / lalitha
For chiral compounds,which are having steoreo isomers.
| Is This Answer Correct ? | 19 Yes | 6 No |
Post New Answer View All Answers
In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
What is related substance by HPLC impurity limits as per USP?
What is rs test why we are performing rs test?
I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?
how can give the expiry period and restadardisation of volumetric solution
Which is the highly polar and highly non polar column in HPLC?
what is mean by peak intigrity?
How doing qbd practically?
Why to use propyl paraben in HPLC gradient calibration
In Assy by potentio metry titration method how select MET U ,DET U, SET U,
why require the ph, buffer during hplc mobile phase?
what is third integration
What is the difference between chromatographic purity and related substances?
How much is the standard area for glc analysis
acceptance criteria for lod & loq by standard deviation of response and slope??