I'm currently applying this method - with very little luck and heavy ink use (for nozzle check).
Maybe I just have to be patient?
As I could not easyly buy the liquids I bought a cleaning kit from JETlitetech specially for Epson ink.
(I needed the tubeing and fittings)-
AFAIK Epson printheads are not user replaceable, so they should not be removed for cleaning outside the printer. Maybe one of the Epson experts has suggestions for other cleaning methods?
I bought demineralized water and isopropyl alcohol from "Matas", I bought propylene glycol from an online cosmetics shop. It can also be bought from E-cigarette shops. Concentrated ammonia 25-30% ("Tredobbelt salmiakspiritus") can be bought at many supermarkets.