From Switzerland Europe


Hello

Seen on the net 


http://www.ebay.com/itm/Fuel-Tester-Kit-for-Ethanol-in-Gasoline-E10-Voltage-Motor-Engine-Manual-Head-/111074117660?pt=Motorcycles_Parts_Accessories&fits=Make%3AHonda%7CModel%3ANX250&hash=item19dc88881c&vxp=mtr









 

I like that. Fill it up to the first line with water, then the rest of the way with fuel, and then witness the separation at the 10% line that tells you you are using gas that is 10% ethanol.