Well I was already sold on the titration water washing, but now the temps have dropped I'm even more impressed.
I washed my last batch over a few days so the temp was nice and low for the last wash,
this has produced only a small amount of HMPE's (compared to previous batches),
the feed stock included about 15% gloopy oil (whites).
I'm drying a batch now that had two cold washes, these were settled for 23hrs before draining and the yield is quite a bit higher
(I must have been draining a good few liters of bio with the water on previous batches).
I'm hoping this will have reduced HMPE's even more.
On a side note I've replaced the battery on my daughters car today and wonder if the acid from this is any good for the acid wash stage.