Great article, thanks for doing the work.
Rather than a heavy syringe, one could simply carry a tiny 30cc (1 oz.)measuring cup, like the kind that comes with several cold medicines. The graduated lines could allow one to add small quantities of water. I usually carried my alcohol in a talking rain bottle, and used the cap for measuring fuel. I started carrying the 30cc measuring cup bec. I always seemed to spill a bit each time.
Lately, I decided to switch to Everclear to minimize toxin exposure, and to have something to use in a pinch as an antiseptic, etc. In the US, you can't buy 95% EtOH in many states. In WA, one needs a permit. I had a friend bring me a jug from Oregon. Unfortunately, I can't fly on a plane with it and most stores near trailheads don't have it. I can't seem to find a source that lists which states allow one to purchase Everclear. Maxine