Biodiesel Titrations part 2 of 2

[fongman312]

Should the bowl with the sample that is titrated be completely pink. I find that it tends to be a peach color because of the yellow oil. 

Therefore, should it be at that point where the yellow-white mixture turns into peach, or should it be completely pink?

'

Thanks for your reply

[ezbiodiesel]

Actually, the main thing is that it changes color most of the way through, and holds it for at least 15 seconds. The actual color can vary a lot from pink to peach, lavender, red etc. As long as it changes and holds, it's done. Sometimes it will appear that a small amount has not changed, just keep swirling and if it holds it's done.

[Flamebustersofkansas]

It is hard to tell which bowl is which with only 2 on the screen.

[ezbiodiesel]

The bowl on the left is the Titration container. The one on the right just holds the reference solution of Lye/water or KOH/water.