I finally got around to using the empty 1400 cartridges I ordered a good while back. Following the packaged instructions I attempted to put 15ml into the first cartridge. I'm using a 12ml syringe as that's what I've got in my darkroom. I was getting some bubbles coming out of the fill hole once the 12mls were in. When I attempted to put the next 3ml in I got overflow right away. (and a mess of course - luckily over the big sink in the darkroom so no harm done)
I used a needle to insert the ink, slooowly into the cartridge. The needle was positioned about halfway down the front of the cartridge (bottomed, then withdrawn slightly). I held the cartridge at an angle with the fill hole uppermost. Ink was injected slowly. I watched the ink flow and fill the various voids and tapped the cartridge gently with my fingers. Even being very careful, I found I could get only about 12ml into it without overflowing.
So, how much ink will go in really?
Once I finished filling them I let them sit for an hour or so while I cleaned up and installed the waste ink bottle on the printer. Upon firing up the printer, all cartridges were recognized and I'm happy to say that after a couple of nozzle checks the printer seems to perform well. (so far only a couple of QTR test sheets printed...)