1 or 2 drops of Dawn dish washing detergent (or other cheaper store brand if so inclined) in ~250 mls of a 10:1 distilled water:99% Isopropyl alcohol solution will work just fine. You just need enough to produce a little stable foam when shaken. No need to get into industrial grade chemicals like Tergitols. You'll be rinsing with pure water after a vacuuming step to remove the DIY cleaning solution so don't ask about which color Dawn is better. Leave that for the OCD-types that swear they can hear a difference depending on which Dawn is used :-)
Record Cleaning Fluid?
Does anyone use just plain distilled water with their record cleaning machines??