"Jim Wilkins" wrote in message
news
"rangerssuck" wrote in message
...
....
And Iggy, why haven't you scrounged a mass spectrometer for under
fifty bucks? I wouldn't be at all surprised if they were junked
regularly by schools, government labs, etc.
...
For some of them you need training and equipment to keep them
calibrated and prepare the test samples, too.


Even weighing things requires care and some training.
http://www5.csudh.edu/oliver/che230/...al/propuse.htm