Dear All- I have a really quick question here: The Phenopthalein solution I use is a 1% in IPA (reagent grade from Sigma-Aldrich). This should be appropriate for titrating WVO with a 1 normal (1g/l) solution of NaOH in DI water, with the comversion being 1mL of NaOH added corresponding to 1 additonal gram of NaOH needed above the 3.5 g required? I use 10 ML of the IPA/PHTH solution to 1mL of WVO. I've worked out the chemistry, the numbers seem right, but I just want to make sure that the 1% PHTH is about what everyone else out there uses so I'm not getting screwball results. Thanks - Matt
And Keith, thank you very much for the JtF site. _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/