why r u using hplc grade solvents

Answers were Sorted based on User's Feedback



why r u using hplc grade solvents ..

Answer / aaa

HPLC grade does not mean the solvent is 100%. It means that
the solvent is free of spectroscopically interfering
impurities. Ex. absence of UV absorbing impurities.

Is This Answer Correct ?    11 Yes 3 No

why r u using hplc grade solvents ..

Answer / analysis apprentice

Sorry, but HPLC grade first mean that it is millipore
filtered, that means it does not contain any larger
particles that will make the drug clog or block the column
used for the analysis.

But it doesnt mean that they wont interfere in the UV
absorbance, since every organic solvent has its cutoff wave
length which will be given in Pharmacopoeias and refernce
books like merck index etc....

Is This Answer Correct ?    4 Yes 2 No

why r u using hplc grade solvents ..

Answer / k.jagadeeswara reddy

HPLC gade solvents are high purity(99.9%)and these solvents are filtered through 0.2µm for chromatography.It means does not have large particles that will make avoid the blockage of the columns,over pressure and free of impurities and the solvent is free of spectroscopically interfering
impurities.

Is This Answer Correct ?    1 Yes 1 No

why r u using hplc grade solvents ..

Answer / nirchana

HPLC is the vry sensitive instrument so it required highly pure solvent without any impurities & hplc grade means 100% pure solvent.

Is This Answer Correct ?    2 Yes 9 No

Post New Answer

More Analytical Chemistry Interview Questions

if rsd failed then what require to do?

0 Answers  


why are using toluene in uv calibraion in resolution performance

2 Answers   MSN Pharma,


How to make up 100ml of a solution cintaining compound A at 95µg/ml and compound B at30µg/ml for an HPLC reference standard.

3 Answers  


Why sulpuric acid only used to ROI but not used nitric acid and some other acids?

7 Answers   Cadila, Laurus, Ranbaxy,


In pharmaceuticals formulation OOS applicable in Raw Material(which is not manufacturing in the company. and purchase by approved vendor)).Why?

1 Answers   Orchid,






In HPLC when we use Isocratic method, Gradient method in hplc?

8 Answers   Pharmaceutical,


why kbr is used for pellet preparation in ir spectroscopy, give the reasons? why kbr shows zero dipole moment?

6 Answers  


Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

0 Answers  


what is the disso medium for tropsiun chloride

0 Answers  


how calculate column dead volume in hplc ?

3 Answers   Torrent Pharma,


today i am doing calibration of HPLC. when i inject the blank it was going on -ve.(bleow then zero) why?

3 Answers  


What is chiral and why this performing in HPLC

4 Answers   Hetero, Macleods,


Categories
  • Organic Chemistry Interview Questions Organic Chemistry (342)
  • Inorganic Chemistry Interview Questions Inorganic Chemistry (123)
  • Analytical Chemistry Interview Questions Analytical Chemistry (1387)
  • Physical Chemistry Interview Questions Physical Chemistry (62)
  • General Chemistry Interview Questions General Chemistry (478)
  • Chemistry AllOther Interview Questions Chemistry AllOther (190)