While the codes are really just simple codes if you look at them and not really scientifically calculated to match a specific ink, (note they almost all are made up of 0 (00), 50%(80), or 100% (ff) of RGB and are the same as creating RGB values like 255,128,255), a couple of quick tests so far show they are pretty effective at isolating single channels. VLM printed out as a large page shows .53ml of VLM ink, .02ml of most of the other colors, sort of insignificant. I plan on verifying this with the other colors, and also am going to check out Jack’s resource because most of his colors show a little mix, so they may isolate the colors more effectively.
There really were no clear directions on how to print these files (i think the site is more directed at consumer printers), I tried a couple of different ways, the best result so far was using PS managing color with epson premium luster profiles, and relative colorimetric. I may modify my file using some of this information to get a more even use of colors, and I have a friend I’m working with to automate printing this out on his 4900 each day to see if this helps.
So a good resource. I do think after doing a clean, and even before printing a nozzle check, printing something that will force a little ink out of every nozzle in the head may reduce “clogs” since most “clogs” really are just nozzles that have had a little air pull back inside. Epson should have a test page that includes color patches to do this.