Ok..
First...
As the person who originally proposed and later developed the HPT (Hot Pan Test) I have to say that the video above does not show one being performed. It is close..but the actual directions are as folows:
The hot pan test.

Smear a finger of wvo across a fry pan (cast iron preferred)as a temp check.

Keep the sample of wvo to be tested handy. Enough for 1/4"-3/8" thickness covering the bottom works best.
Heat the pan on high temp until the smear begins to produce smoke then pour in the sample.

NOTE:
Do not pour in a sample with any visible water. If water droplets are visible no testing is needed. There is water present in your sample. Visible droplets of water will spatter hot oil out of the pan and may cause burns or fire.


Look closely at the bottom of the pan where the oil meets it. Are there very small bubbles forming. This indicates some suspended water. The number of bubbles indicates how much water is present in suspended form.

I usually accept a FEW suspended bubbles (up to 3 per sq inch maximum). Lots of small bubbles is unacceptable to me. If crackling or popping is heard..way too much water is present for the VO to be safely used as fuel.

I have tried to keep this test as simple, cheap, and translatable as possible. It works....though it is not "foolproof".


NOTES:
Do not pour in a sample with any visible water.

If water droplets are visible no testing is needed. There is water present in your sample.

Visible droplets of water will spatter hot oil out of the pan and may cause burns or fire.

Do not average bubble count. The visibility of bubbles is dependent on the temp of the underlying pan and this may be regionalized depending on your heat source.

If the pan has been washed or not used previously it must be "seasoned" to make certain that no moisture is trapped in the pores on the surface of cast iron.

False positive results (bubbles) can be obtained if the pan is WAY too hot..or if solvents are mixed in the WVO.

False negative results (no bubbles) are possible if the suspended water has high concentrations of salt/sugar/ acids.

End.

You can find quite a bit more infomation on dewatering wvo at http://voconversionbasics.websitetoolbo … orum=55947