Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2833

Is benzene aromatic?

1182

how require to set assay concentration for standard and sample?

923

How you develop a method in HPLC?

2617

we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

1872

1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.

2887

During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.

3079

Why is acetic acid added?

1166

Why is ammonium hydroxide added to the brass solution?

1301

how to set sample and standard concentration in RS method?

904

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

2630

Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

2609

What is similarity factor and its use in api strength?

1299

how to prepare the 0.001M tio2

2391

What are the challenges and opportunities associated with handling and storing Protactinium due to its radioactivity and scarcity?

644