I've been thinking of making some home -brew record cleaner.Most of the online recipes use 20-25 % ( or more) isopropanol.But some think this is not good for modern vinyl because it leaches out plastic stabilizers in the vinyl.Others think the ill -effects are due to contaminants in the isopropanol.I can get access to lab grade ISP so was wondering if you had any advice before I make the plunge. I have about 300 lps that I want to clean.