Explain why do some medications contain hcl?

1094

Define hydra?

1025

what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1921

EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

2574

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.

2170

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

796

What is the use of tlc and hplc? And when and where use?

1100

State beer’s law.

943

Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1855

However ozone is heavier than oxygen still ozone is up there in sky why?

1010

Explain the secondary structure of proteins?

918

What is the difference between purge septum flow and column flow in gas chromatography?

2479

What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

1850

Give the others form of iron ore.

964

how you start RS method development when for new product?

660