IN pH CALIBRATION,CALIBRATION IS DONE FOR pH METER OR ELECTRODE?HOW WILL YOU JUDGE THAT THE METER TO BE CALIBRATED WITH 4,7,9.2 BUFFERS?EXPLAIN TEMPERATURE EFFECTS ON pH.

Aurobindo,

AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

What is a base line?

what is differance between density and specificgravaty

Neuland,

what is defferance between dipolemoment and polarity

Neuland,

In standard weight box used for calibration of analytical balance there are two numbers (Qty) of 20mg, 200mg,2.oGM weights. Why?

Orchid,

WHAT IS USE OF ION PAIR REAGENTS?

How to calculate signal to noise ratio by this formula 2H/h where h from where and how to measure

How to choose the which salt is suitable for mobilephase

Cipla, Ranbaxy,

What is quality controle.

What is Standard deviation

Cipla,

When you get Moisture content by KF higher than by LOD, what does this indicate?

what is deference b/w the working standard and reference standard

How do we fix the sample concentaryion in hplc method development. what is the basis?Thanks in advance

DRL, Glenmark, Orchid,

Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and apperance ? suggest ?

Orchid,