What is primary & Secondary Standard ? Give Example
- 17 Answers
- 161512 Views
- Cipla, Lupin, I also Faced
- E-Mail Answers
Answer Posted / faisal jameel
Primary standard
1- are those whose purity is already known.
2-non reactive.
3-used to validiate secondary standard.
4-are thermostable.
Ex- NACL, SODIUM OXALATE, NA2CO3.
Secondary standard-
1-reacts with moisture.
2-not thermostable.
3-validiate by primary standard.
4- not stable at room temperature.
Ex-NAOH, HCL, H2SO2
| Is This Answer Correct ? | 29 Yes | 6 No |
Post New Answer View All Answers
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
what is mean by ambient temperature?
using gradient pressure in gas chromatography are not ?using gradient pressure why
Qc interview questions
How we can identify process related and degradation impurity in single method with short period?
Why Ethanol is Used for Standardization of GC Head space?
How to calibration of the uv spectroscopy and its test?
in hplc chromatogram started from left to right and in uv spectrum started from left to right
why does used dry caffien in HPLC calibration?
As per ICH related substances stability trend limit from initial to shelf life
cefoperozone and sulbactam inj. hplc test method
WHY given much noise PDA dector then VWD Dector
Tell me about analytical method validation in QC
why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?
mode of absorption in alimentary canal?
