why we are used 4,7,9,2 buffers for the ph calibration

Answer Posted / amarsingh

Because by using this all pH buffer we can cover all range
of pH (Acidic , Neutral & Basic ) So we use this range

Is This Answer Correct ?    16 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

340


Explain the relations between number of carbon atoms in alkanes and retention time ?

1630


Why to use propyl paraben in HPLC gradient calibration

6103


inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

293


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1524






what is procedure of actual procedure for registration of drug?

1456


what is the purge flow & how to calculate

1985


how we can identify the impurity is coming below loq at transfering site?

388


what is third integration

1502


How you develop a method in HPLC?

2081


what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2208


effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

330


What is mean by PDR?

335


What is the difference between spectro meter and spectro photo meter?

10430


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

2716