Earlier on in this thread I said I did not think this method would work with NaOH or KOH,
Steve (I think) said it worked for him with KOH.
Well I've now done a batch with NaOH, done the 7% prewash and then went straight into pump washing,
no emulsion at all (I did have some acid to hand just in case).
I'm going to try this again on my next batch and report back.