Well, I understand the sentiment, but I'm not looking to risk my own printheads in self experimentation (I did enough experimenting with my own head as a teenager many decades ago). It's a simple question if anyone does have the knowledge either as a chemist with DTF ink knowledge, or someone who has already done some experimentation, with good or bad results.
Just looking to save a couple bucks on ink, or perhaps even save a printhead with the clog prevention of a tiny dilution of 6 mos old borderline ink. I consume all kinds of stuff past the expiration date with a little common sense, should DTF ink be different? And milk is much cheaper.
A safe way to rejuvenate 6.5mos ink to prevent clogging a printhead would be valuable information to many, and maybe even a business opportunity to a chemist. johnson4, I have a lot of respect for all your informative posts but I'm surprised you're not somewhat curious about this. Maybe you consume all your ink under expiration.
Actually, I think the harder question than whether a little distilled water or a few drops of flush solution mixed in the ink would hurt the printhead would be how it might affect the quality of the transfer?