On Jun 5, 3:13 pm, "Tri-Pacer" wrote:
The reagent is a light purple color and when it is introduced into a sample
of fuel with alcohol it turns the sample purple. A chart is included to
determine the percentage of alcohol. The kits were put together by
a "B.B.TravisCo." PO Box 287 Lodi CA 95241 and are supposedly Patent Pending.

I haven't found any sign of a BBTravis Company but my searching skills
aren't the best.

I sure would like to know what the reagent is that was used.

The reagent appears to be methylrosaniline chloride.

See U.S. Pat. 5,229,295 issued to Basil B. Travis of Lodi, CA.

A colorimetric test for alcohols (any alcohol) comprises
0.1% gentian violet dye in mineral oil suspension which
when shaken with fuel causes the fuel to become purple
when there is at least 1% alcohol present. The purple color
is proportional to the alcohol concentration in the range 1%
to 5% where the percentage of alcohol may be estimated
by the intensity of the purple color.
snip
As it is perhaps well known, gentian violet dye is chemically
methylrosaniline chloride and has been used as both a
bacteriological and histological stain ...