Isopropanol is 99.9% pure and is used to remove resin residues after printing in resin printers. IPA (as it is often called) is also perfect to use for cleaning building boards before printing, effectively removes wax, oil, oxidations and dirt. Can be used to advantage to clean electronics – then make sure that all power is disconnected so that no sparking occurs.
Keep in mind that IPA is extremely flammable and emits strong fumes. Use in a well-ventilated area and never near a fire.