Last batch after demeth then bubbled overnight I saw this clinging onto my airline. When I tried to lift it out with a rod it slipped off and sank immediately. I forgot about it but today getting ready for my next batch I saw it again in the bottom of the tank. Its very slippy and like stringy snot. To see if it's something from the oil I've emptied the tank and it's now draining along with the soap and glycerol in a pillowcase into a separate container.
The oil was well settled, glycerol washed with a two stage pass using NaOH. Todays batch after drying I glycerol washed it with added chems to reduce the titration last weekend ready for today. After draining all of the glycerol out and it cooling down over the week the oil in my jug looked almost like jelly. When I drained some more it was the same but when heated up to processing temp it cleared and processed ok. We will see it any of this slime appears after a good bubble.
The oil titrates about 3. There has never been any whites, even over last winter outside in cubies or free water, only a black sediment which self settles out forming a sludge. This is the first time that I have had this happen. The bio seems to be good. Any ideas as to what it might be.
One more thing to note. The oil I used on this batch was the first time from a 205 drum that I filled up late summer. Just wondering if something has mixed with the oil while it was stood, although I gave the drum a good wipe out first.
