The industry standard is HPLC (high performance liquid chromatography). Those things go for tens of thousands of dollars up front, plus maintenance and consumables.
If there was a less costly way of doing it, you bet companies would have settled on that by now.
What can be used to detect impurities at those level? Maybe there is an additional machine needed that can also be built in a garage.
The industry standard is HPLC (high performance liquid chromatography). Those things go for tens of thousands of dollars up front, plus maintenance and consumables.
If there was a less costly way of doing it, you bet companies would have settled on that by now.