purpose? medusa begone?!?
see: ammonia koan
it was referring to washing the SOLVENT.
water washing the 13x to regen was suggested.
… but I’m not sure that was here.
what are you hoping to achieve with a water wash?
what are you washing?
edit: …without those bits, your query is definitely non-trivial. I don’t believe I’ve seen it, which means I’ve got no hooks with which to find it.