Answer / ch.madhava reddy

A primary standard is a reagent that is extremely pure,
stable, has no waters of hydration, and has a high molecular
weight.

Answer / kishor solanke

A reagent of high purity and non-parmacopoeal, which is
stable with respect their charactristic property at NTP.
Which is generally used for standardization only.

Answer / kirn

primary substances are highly pure and athentic substances
which are used in the standardization of volumetric
solutions.

Answer / jayalakshmi

A primary standard is a reagent which is very pure,
representative of the number of moles the subatance
contains and easily weighed.Primary standards are typically
used in titrations and other analyticaL techniques as
standardization solutions

Answer / ram krishna

Primary standard are highly purify and none degradable

Answer / nagaraju

It should be nothydroscopic and stabule Compltly solubule in spacified solvents

what is optical active and non active give examples?

1 Answers   GVK,

pharma industries oriented

0 Answers   Apex, Micro Labs, Zydus Cadila,

In Dissolution Test why limit is define Q+5% what is the role of +5%.

0 Answers  

In method developement or in any analysis if we use small length column for analysis what happen then ? why ?

3 Answers  

Why we use methy Ethyl Propylparabine For HPLC Calibration

1 Answers  

is there any exact definition for Theoritical plates ? chennu srinivas

5 Answers  

ash or residue in that what will be there.

3 Answers  

How to prepare ppm solution of Nacl form its salt?

5 Answers  

what is range of Vivible UV ? What is UV& Vivible spctroscopy use for ?

6 Answers  

What is diffrence between residue on ignition and sulphated ash?

37 Answers   Aurobindo, Cadila, Dr Reddys, Mylan, Panas Pharmaceuticals, Piramal Healthcare, Remidex, Zydus Cadila,

India is. Under which zone as per QF1.?

4 Answers   Acebright, Aurobindo, Gland Pharma,

HPLC Calibration was done in Reverse Phase, but not in normal phase why explain?

11 Answers   Cipla, Orchid,