why water, methanol, ethanol ets solvents are used in UV
SPECTRIPHOTOMETER for blank reading ?

Answer Posted / nabil

Methanol for example absorbs at wavelengths below nm, and
water below 190 nm if we use methanol-water mix as a blank
we would have to use a wavelength grater than 205 nm to
avoid false reading.

Is This Answer Correct ?    5 Yes 8 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is third integration

1502


What is importance of pH in the Heavy metal test and How it effect on the test results?

1758


why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?

2348


for which product require to do content uniformity? what is limit of cu?

321


if you have given one product then how you determine the impurity in that?

294






How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

1955


WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2145


iam usig ph buffers merk. manually how to prepare ?

1781


why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

1183


why does used dry caffien in HPLC calibration?

1570


how you fix the limits of impurities?

385


how to select short coloum and long coloumn for new molecule

1820


what is the disso medium for tropsiun chloride

1800


if tech transfer fails whay require to do?

337


In rs method development when we are going area normalization method to dilute standard method?

948