What is the difference between Primay and Secondry
Standard ?
Answer Posted / 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 |
Post New Answer View All Answers
Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?
What is the formula for relative diffrence for standard solution in solution stability in validation?
what are the standard methods for HPLC?
why xterra column require to use at higher ph?
How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?
if you given one product then which tests you will perform?
iam usig ph buffers merk. manually how to prepare ?
Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?
A ha tc is actual defination of retention time?
Why use only methanol,used determinationof moisture content not use other solvents
how you confirm the assay method?
How we can identify process related and degradation impurity in single method with short period?
what is mean by ambient temperature?