You could test for specific gravity (use a hydrometer) , viscosity, gel points (temp at which it starts to solidify), or flash points.
All of these need to be (about) right for an effective fuel, and are easy to test for. I got a catalogue for a schools chemistry supplier - they have all sorts of cheap(ish) meters - tho we haven't tried em yet - they're called Philip Harris and the phone no. is 0870 6000193 (UK only ). If you say your'e a school they'll sell you chemicals (yuk yuk) john __________________________________________________ Do You Yahoo!? Spot the hottest trends in music, movies, and more. http://buzz.yahoo.com/ Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.com/2000/biofuel/biofuel.htm To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
