Glen,
The method used by spectroscopists to measure the QE instrument curve, I'm not sure is easily available to you....it involves using a spectrometer measuring a known source and then by dividing the results getting a response curve for the camera (including the rest of the optical train -lenses etc.)
I'm not sure what other rigorous methods are available.....
http://www.astrosurf.com/buil/50d/test.htm
Re resolution... that can also be done very easily with a spectrograph - measuring the FWHM of nominated emission reference lines - the FWHM is a measure of the pixel size/ sampling etc.
(It should be in your case close to the actual pixel size - after the mono conversion)