Quote Originally Posted by Alan Johnson View Post
PG may also change dissociation:
http://www.chemvistasolutions.org/pr...surements.html
What is the pH of this developer and the development time in the dilute solution?
@Rudeofus: The buffering should be similar to or even better than XTOL, because the AA will improve buffering some and I'm using more metaborate. However, I wrongly thought that PG was neutral. I gotta check these things in the CRC Handbook.

@Alan: The pH (with the PG mixed in) is 8.33, which is .04 higher than the 8.29 I measured for XTOL. The dev-times are intended to be the same as XTOL. I used 6.5 min @ 20C for TMY2. That article about differing dissociation-constants is interesting. Thanks for pointing that out.

Mark Overton