Answer / balu

I thing to maintain the pH of solution

Answer / t reddy

buffer is used to keep PH stable in ionizable condition.

Answer / haribabu

in Reverse phase chromatography for good resolution

Answer / msreddyvelagala

in solute we may have different products,all these cannot elute at same concetration of mobilephase in short time.solvent is polar,to get the eluates faster we have tochange the mobilephase composition(i.e polarity to be increased up to certain time intervel)

Answer / sasibhushanreddy

to control the ph of the soultion

Answer / vikasnautiyal4

because solvent system intrect
with mixture (they are mixture
of acid and base) to prevent
tha ionisation and controle
ph of analyte.

Answer / vijay bhosale

To maintain the PH oo solution.

Answer / manisha dawale

To prevent ionization,to control retension and for proper peak shape

Answer / tapan shaw

To simulate the dissolution behavior in our body fluid
because our body fluid where drugs release occur is either
acidic or basic.

Answer / ankita

to prevent ionization of weak acids and weak bases.

why do we have to used saturated ammonia in TLC

3 Answers   Cipla, IPCL, Mylan,

What is Threshold in hplc?

2 Answers   Hetero,

in each media we require to use SLS? how to proceed?

0 Answers  

if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

0 Answers  

What is calibration procedure of gredient HPLC pump

4 Answers  

what is the definition of Precision.

4 Answers   Cipla,

why should we do limit of stray light in UV calibration and why should use potassium chloride

2 Answers  

why ph is between 0 to 14

6 Answers   Apotex, Reliance, Zydus Cadila,

how many types of Proceing methods?

8 Answers   Reddy Labs,

acetic acid is weak acid & perchloric acid is strong acid.but how perchloric acid is soluble in acetic acid

3 Answers   AVT, Hetero,

HOW RRF IS CALCULATED IN HPLC

2 Answers  

Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?

6 Answers