From: Ahmad Tehrani To: ROOTS Sent: Monday, May 01, 2006 9:51 PM Subject: [roots] Mixing EDTA & NaOCL experiment I am like a dog with a bone at times. My schedule changed today and I decided to see for myself what happens when you mix EDTA and bleach together. Of course his is only a simpleton exercise, but in a way answered some of the questions lingering in my mind. First off the mixture had an exothermic reaction that got hot to touch....~145 F. and dang it, I was so excited that I forgot to take a picture of the temperature....(( I added little by little more hypo and it took 6cc of NaOCl to change the color up to the dark red color when I tested the 100% bleach by itself. So the final solution had 8cc of bleach and only 1cc of EDTA. the ratio was 8:1 to neutralize the effects of EDTA.   Folks this is what you get from a cheap lab with no corporate sponsors. but hey I had fun and on the very next patient, found a MB2 in a second molar. I believe in Karma.....My name is Ahmad.))