Quoting [EMAIL PROTECTED]: > > back when I *did* do it -- as a point of interest, is there any variety of > vinegar pure enough to substitute or to prepare a substitute? since it's > effectively the same chemical? >
Glacial Aecetic acid is the concentrated acid (around 99% pure) commonly sold as stop bath, must be diluted before use, often initially to a 28% stock solution that is further diluted for use (approx 30:1). Vinegar is approx 4% acetic acid, it is fine for use as a stop bath, I'd probably try diluting it 1:1 with water. ------------------------------------------------------------ This email was sent from Netspace Webmail: http://www.netspace.net.au
