What is the water content?
What type of centrifuge do youuse to process it?
(e.g. Mechanical driven or fluid driven centrifuge?)

I'm interested.  I live in Quakertown but have my own storage. Send me your email and or phone number.

"Water content is zero...i HPT test every batch"
The HPT is not capable of telling if the water content is zero.
It is simple not THAT accurate.
I know...because I developed it many,many years ago. 
It is a crude test by todays standards.
If you are selling wvo as fuel you need to use a more accurate test than the HPT.
An inexpensive but tolerrably accurate test is the WVO manometer test. If your wvo water content is higher than 500ppm it is probably too high for even older mercedes injection systems. If it is higher than 200ppm it is probably too high for more modern higher pressure injection systems. Water in fuel acellerates the rate at which high pressure fuel systems wear out. Some of the parts in those fuel injection systems are very expensive to replace and if you don't replace them (or don't notice they need replacement) the engine they feed fuel to also tends to wear out much faster. 
Because of this the "purity" of the fuel you are selling is very important to your customers.
If you need help making and using a manometer contact me directly and I can provide links and instructions.