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Definition of Qualitative and Quantitative
Any one, can explain the definition of qualitative and quantitative tests. like viscosity,dimension,colour value etc will come under which type.
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6 Replies
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it will be more reliable and accurate, if reference taken from official documents like pharmacopoeia,FDA,ICH etc
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International
Union of Pure and Applied Chemistry, Nomenclature in evaluation
of analytical methods including detection and quantification capabilities, Pure
& Appl. Chem. 67(10), p. 1701 (1995) -
Like wise IUPAC, some more definition from official document will give more clarity.
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Those terms are just defined terms.
Qualitative testing - Using subjective measurements on some characteristic of a product.Quantitative testing - Using objective measurements to characterize a product.So a pH measurement or a viscosity measurement would be quantitative measurement because you end up with a number based on some defined scale.A measurement like appearance or odor would be qualitative because it relies on a subjective measurement to get a test value. -
Thanks for reply Perry.But what’s your view about the definition by IUPAC,as there terms are defined very clear.
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For some branches of chemistry the IUPAC definitions are good.
I’m not exactly sure what you are asking. I gave you the definitions as we use them in the cosmetic industry.
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