Testing E85

What are some easy ways to test E85 I know of the little tubes summit sells but am wanting to know what are some of the ways people are testing it.

The little tubes that summit sells

Holley test tube method.

I prefer these. They have a wider range.

https://www.ebay.com/itm/1-ETHANOL-...=p4712.m570.l1312.R1.TR0.TRC0.A0.H0.TRS5.TSS5









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bro.... read this!


www.injectordynamics.com/AlcoholArticle.html

My buddies and I use this one (summit has it too):

https://www.amazon.com/Quick-Fuel-Technology-36-E85-Sample/dp/B007ZJ749O/ref=sr_1_2?ie=UTF8&qid=1531934314&sr=8-2&keywords=e85+test+tube

I use a shot glass, swish it around a bit in my mouth, a heavy burn means its good quality...or grab the lil tube summit sells

Is there a way to tell if the E85 has absorbed water?

Hydrometer, but would take a very precise reading to tell you anything.