How to test pH level in WVO
 

I've searched and searched but I can't find a way to test the pH level in the WVO that I am collecting. I am trying to be on the safe side and make sure I am getting only the best oil to use so I don't cause any issues down the road. I went to a pool supply store and got some litmus paper test strips but I am not sure it worked very well. When I googled testing the oil pH I did see a guy who used an electronic pH reader. Has anyone done this and had good results? Is there another method that I should use to test for the pH?

Thanks

Try a search at Biodiesel.infopop

You may have success with using Ph litmus paper strips on the wash water if you choos to mist wash your WVO. Another option is to use a Total Dissolved Solids meter on the wash water.

Sun Wizard on info-pop is pretty well versed in this area.

Litmus paper won't work on the oil.
You can get a good idea of the PH level by putting some wvo in a jar and adding water. shake it up real good then test the water.

Mist wash wvo????

Oil does not have a Ph....

It does however have an Acid-Number....

The only way to test accurately for this is by a Titration-Test....

Look under any BioDiesel tutorial for how to perform a Titration-test.

Ph Meters/ litmus paper will give meaningless results....

Agreed. Although I currently make bio and don't run WVO (I'm headed that way though) I use a great method for determining a pH of 8. Learned about it on one of the above mentioned sites. Mix a little turmeric (from the spice counter at the grocery) with 91% isoprophyl alcohol. The exact proportions don't really matter. Put a few drops of the solution in a small container of your oil. If the pH is <8, the solution will be yellow. If the pH is> 8, it will turn some shade of red. Works great and is super easy. I'm not really sure what the pH of oil should be (somewhere < 8 I'm sure) but a pH of 8 is what we are shooting for with bio. Hope this helps.

See http://www.burnveg.com/forum/viewtopic.php?t=5
for TDS meter testing which shows acids/bases/salts/soaps in your VO, much better than PH.

Yup!:)