Quote Originally Posted by MattKing View Post
HCA saves time and water, and helps ensure archival washing.

It isn't the only way to get an archival result, but it is one good way.

If you want to read lots of interesting information about washing film, including the role that HCA may play, you might want to read through this sticky thread: http://www.apug.org/forums/forum37/8...hing-test.html
Thanks for the link, Matt! I'm using a hardening fixer (Kodafix), so it looks like HCA was a good idea, as I did get some slightly yellowish spots on my first rolls after 20 minutes of washing.