Tergitol 15-S-3, and Tergitol 15-S-9 Surfactants are nonionic surfactant which are ideally suited for many cleaning applications. The S-3 is oil soluble, and the S-9 is water soluble. This product is a mixture of linear secondary alcohols reacted with ethylene oxide. The general formula is...
www.talasonline.com
I use the 15-S-9 that's water soluble. I mix a couply of milliliters into a liter usually 2 ml, about two eye droppers full. If there is something really weird stuck on a record or it's really dirty from a used bin I might up the concentration or apply some of the product directly. It works for me.
A VPI and the pre-mixed solution
@HiFi Guy recommends is much easier and probbaly worth the upfront investment for convenience alone.