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What is the difference between Primay and Secondry
Standard ?
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Answer / tatababu
Primary standard means "the concentration does not varies
with time, atmosphereic conditions......, and is easily
available,stable.
Secondary standard may vary with time,atmospheric
conditions etc.....
| Is This Answer Correct ? | 71 Yes | 20 No |
Answer / viji
Primary standards are also called as reference standards.
Standards of very high purity. They are procured very less
in quantity and hence would be used up for the
standardization and preparation of inhouse working standards
which are called as secondary standard. From primary
standard a secondary standard can be prepared in adequate
quantity.
| Is This Answer Correct ? | 48 Yes | 10 No |
Answer / 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.
| Is This Answer Correct ? | 20 Yes | 3 No |
Answer / dixit kachhia
Reference Standard, Primary
A substance that has been shown by an extensive set of
analytical tests to be authentic material that should be of
high purity. This standard can be: (1) obtained from an
officially recognised source, or (2) prepared by independent
synthesis, or (3) obtained from existing production material
of high purity, or (4) prepared by further purification of
existing production material.
Reference Standard, Secondary
A substance of established quality and purity, as shown by
comparison to a primary reference standard, used as a
reference standard for routine laboratory analysis.
| Is This Answer Correct ? | 4 Yes | 2 No |
Answer / vaishali
Primary standrds are those standards which is used for
standardisation of volumetric solutions.
Secondary standard is inhouse working standards, which is
evaluted with USP/EP reference standard..
| Is This Answer Correct ? | 11 Yes | 17 No |
primary standard:
which material u can use to prepare a standard
solution that is primary standard.
secondry standard:
u did't know the correct strength of the standard
solution. so u can use some material to standardizing the
standard solution. That material was secondry standard.
| Is This Answer Correct ? | 8 Yes | 31 No |
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