Why we compare unequal concentrated solutions in heavy metals test. For example comparing the test solution with 1 ppm lead standard and telling it's less than 20ppm?

1 Answers   Micro Labs, Mistair,

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How to develop the method when we have very low amount of impurity?

2 Answers  

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How to prepare 50 ppm ammonia solution form 25% ammonia solution?

8 Answers   Cadila, IIT,

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Can any one tell what is RECALL OF PROCEDURES is

1 Answers   Macleods,

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why we use only six bowls for dissolution of a drug

1 Answers   Cipla, Natco, TelePerformance,

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Why we are using only KBr in IR spectrometer why not KCl

10 Answers   Dr Reddys,

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Give me details about dissolution , with name ?

1 Answers   EPCA,

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In pharmacopeal solibility parameter of a material, is et essential to test all paramete? If 70-75% parameter passes can we assess that the material is satisfactory or not?

1 Answers   Aurobindo,

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What is the b/W dead volume and dwell volume ?

2 Answers  

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How to calculate the signal to noise ratio.

1 Answers   Rakshit Drugs,

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for which product require to do content uniformity? what is limit of cu?

0 Answers  

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In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

0 Answers   Orchid,

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