Answer Posted / viji

Tap density is a device in which mechanically tapping of a
measuring cylinder with the powdered sample . with the
formula g\ml

m\vf

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

2609

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how require to select dissolution media? what is discrimination?

791

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How we choose the mobile phase for method development.?

1217

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What is the requirement for brazil in the analytical method vslidation comparr to ich?

784

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What is the purpose of octyl silane columns?

4290

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in stress study if your api not soluble in hcl naoh h2o2 then what require to do?

842

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identification is for unknown? qualification for known? reporting for LOQ?

725

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

3694

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In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?

927

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

2833

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how to calculate elemental impurities?

1034

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

2150

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if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

683

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As per ICH related substances stability trend limit from initial to shelf life

3257

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Why dissolution test is not performed in all of the products

2537

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