Why a1% value is used for some product ? What is the criteria for selection a1% value ?

1907

what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

3140

how require to set assay concentration for standard and sample?

403

What are constituents of brass?

790

what is mean by peak intigrity?

387

Why there is no bond with 100% ionic character...??

1389

How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

2112

what is stero electronic factor.2 what is steric control factor and what is product control factor

1695

why require to do water content for drug product?

361

A ha tc is actual defination of retention time?

1105

What is the purpose of adding urea?

924

In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

1495

Describe the process of Actinium extraction from its primary sources and how it's obtained for various applications.

153

How can I develope method of dissolution by HPLC OR UV

1923

How to establish relative response factor for hplc. Why it is required?

753