well, I don't remember the exact process... <img src="/images/graemlins/confused.gif" alt="" />
I seemed to remember we had to keep the acids at a certain temp, preventing it to raise above a certain point, but also checking it did not go below a minimum temp...
anyway that's a long time ago ...
and it didn't work... hopefully ? <img src="/images/graemlins/grin.gif" alt="" />