If you need to know the percentage of your ethanol, take a sample and test it. Each Ethanol sampler has a 2 inch stick-out on the bottom
for ready fill sampling of liquids involved with blending fuels and ethanol production and transfer.
These samplers are made translucent, unmodified polypropylene for superior chemical resistance.
They differ from standard coliwasa style samplers in they have silicone stoppers, which are more compatible with ethanol.
Meets CFR 40 and SW-846 of EPA Regulations & Standard Methods.