What is the difference between Primay and Secondry
Standard ?
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Answer Posted / venkata padmanabheswara rao
Primary Standard:
A substance that is widely acknowledged to have the
appropriate characteristics within a specified context and
whose value is accepted without requiring comparison to
another substance, this substance should be obtained from
official recognized sources.
Secondary
A substance of established quality and purity as shown by
comparison to a Primary standard used as a Secondary
standard for routine laboratory analysis. It serves as a
substitute for its corresponding Primary standard.
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