What is the difference between the working standard and reference standard?1 177
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )
What is the acceptance criteria for moisture balance when calibrated with sodium sulfate
I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?
sop of a uv visible spectrophotometer double beam elico model
What is the purpose of octyl silane columns?
Which is the highly polar and highly non polar column in HPLC?
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
Tell me about analytical method validation in QC
Explain the relations between number of carbon atoms in alkanes and retention time ?
How to start the dissolution development for unknown tab?
How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.
What is aggregate and fragments in SEC?
In the gas chromatography what is used carrier gas and make up gas?
Why Ethanol is Used for Standardization of GC Head space?