Mixed it at 49% meth and 51% water, as recommended by Devil's Own, same as their own pre-mixed stuff. Been using it at that from day one.
http://www.alcohol-injection.com/premixed-methanol-44/devilsown-brew-125.html
"DevilsOwn Brew ™ is DevilsOwn proprietary mix of 49% methanol and 51% water. This is the perfect mixture to inject using your alcohol-water injection system. It is made in a controlled environment to ensure the ratios are accurate."
http://www.alcohol-injection.com/premixed-methanol-44/devilsown-brew-125.html
"DevilsOwn Brew ™ is DevilsOwn proprietary mix of 49% methanol and 51% water. This is the perfect mixture to inject using your alcohol-water injection system. It is made in a controlled environment to ensure the ratios are accurate."