Methylated Spirit ('Meths') and Denatured Alcohol are generally considered to be alternative names used in different countries for the same thing ( https://en.wikipedia.org/wiki/Denatured_alcohol ). However there may be differences that affect their use for our purposes. In the USA I use Denatured Alcohol exclusively for slurrying Guar and PEO. When visiting England I tried using Meths, which worked just fine for Guar but not for PEO. When I tried to slurry PEO (WSR 301) with Meths I got a thick goo so I think it's partly soluble.