right chaps, I've been trying too keep up on this thread even though I'm more than happy with my method and not thinking of changing, but as ever just trying to simplify/clarify things
But ifn we assume folks have done a reasonable conversion and haven't used to much catalyst you should be able to work out some rough guidelines for amounts of acid per litre to neutralise the soaps created from good oil thyrough to bad oil?
And assuming someone did use a little too much would that cause any major problems, except needing more water to remove?
EDIT: just read Nathans post it's where I'm leaning
My first and only batch so far Paul came to me with vinegar, we did a trial and error addition of the vinegar on samples and then an amount added to the batch with some water, pumped and left overnight. The vinegar was dropped and with this 180 litre batch I used 5 x 25 litre pumped water washes, the water was still coming out slightly milky. Each 25 litre was left at least 12 hrs before being dropped. It was then left for a few days as I was away and then dried.
Paul tested a sample for soap and water content which both came out perfect, however it was acidic, Ph 4.2 I think it was which he then titrated and came out at 0.8. Based on the theory that Wvo users would use oil that could titrate up to 10 or so It has just been added to around 80 litres of the previous batch.
2 questions spring to mind 1, if too much vinegar was used why was the water still milky ? all the soap should have been well gone ! . . . 2, why did 125 litres of water not neutralise the acid and balance the Ph of the Bio ?
Thoughts ?
The next batch we are going to be more scientific using Sulphuric.
