[Dust]

On almost all of the containers I have seen here have メタノール with a percent next to it. I have seen up to 52% methanol, but it was almost 400 yen for 2 liters. Next time you go to a store with WWF, look for one with a red cap or a -30 to -35C designation, and look for methanol% on it. Most of the winter stuff doesn’t have other stuff in it. Do you have Yellow Hat auto parts stores? I know that their bottles have 35%, and not much else. Give the bottle a good shake, and see if it has lingering bubbles. If it does, don’t buy it. You can also ask for it under these names. メチルアルコ－ル 、木精 、カルビノ－ル. I don’t know about the dye causing problems, but I would think that a cleaning with just pure methanol/water mix every now and then would clean the stuff out.