I have this;
http://www.ebay.com/itm/Fuel-Tester-Kit-...1e1&vxp=mtrCheap, simple, small, and lets me know my vendor is honest.
I've read that the pumps marked as "ethanol free" are OFTEN compromised, due to delivery mistakes.
ps, make SURE it's on the "compatable" list for your bike!!!
