Why sulfuric acid is used in sulphated ash / residue on
ignition test.
Answer Posted / aamir sohail
it converts most of the metals into their sulphates but not all like phosphorus does not converted into sulphates it remain same till the end of the test, than these metal sulphates further proceed for heavy metal test that how much amount of which metal present in it...
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
Why a1% value is used for some product ? What is the criteria for selection a1% value ?
why xterra column require to use at higher ph?
If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately
Identify problem faced when mass spectroscopy is used with HPLC system ?
in stress study if your api not soluble in hcl naoh h2o2 then what require to do?
In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
what is mean by covalidation
what is third integration
all types of questions asked at the cipla interview
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.
What is the diffrence in japan mkt requirement in analytical method validation over US?
why octanol used to determine the partition coefficient ?
for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol
What is the use of tlc and hplc? And when and where use?
What are the primary considerations in extractables and Leachables ?