Why we use caffeine for HPLC calibration in Detector wave
ength accuracy test

Answer Posted / sunil tiwari

# It detects on multiple wavelengths, 205,254,273.
# Anhydrous Caffeine is primary standard.
# Highly stable in solution form & can be used for multiple
days.
# Recomennded by many pharmacopoeia.
By Sunil Tiwari Lupin Limited Bhopal

Is This Answer Correct ?    47 Yes 18 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is definition of validation? which components are followed give detail?

1831


if identification threshold crosses the limits then what next step?

337


all types of questions asked at the cipla interview

4136


How require to perform linearity as per ANVISA? What are the acceptance criteria?

719


What is the purpose of octyl silane columns?

3793






which batch require to use for analytical method validation?

335


What if impurity area in control sample coming more as compared to LOQ level of impurity ?

1148


which are the diffrent batches in the pharmaceuticals?

345


if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?

369


2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

1764


how require to set assay concentration for standard and sample?

369


Why we use potassium dichromate in uv calibration Exact reason behind it??

658


about method developement in hplc

1220


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8314


pharma industries oriented

1690