I'm just wondering how it works and why people need a big can of it? It is one time use only? Do you spray the negative carrier or the negative? Is it worth the money? I can't find anti-newton glass inserts for my LPL enlarger at First Call Photographic - just the anti-newton ring spray, and I think it'd be hard to get glass cut to fit (the edges are beveled).
There was a post in APUG some time this year (at least I think so) mentioning an inexpensive source for AN glass. This place seems to have reasonable prices: Dead Link Removed
As for your actual questions, I've only used Tetenal AN spray for making unsharp masks so I can't comment on use in a negative carrier.
Anti Newton Ring spray
I used to use Off set spray powder from the press room which is basically corn starch. We would put it in an atomizer and then spray it into the air and wave the transparency through it. Usually that was enough and it beat oil mounting 4x5 transparencies on the scanner drum
Interesting, I would have never thought adding more dust would be a good thing I'm already fighting enough dust bits on this negative carrier but I'll give it a shot. I've really polished it well and it still seems like only one bit on an edge gets the worse of it even though I've started not handling the negative I want to print at all (hold the strip from the other end sort of thing).
Heather - I read somewhere about people using hairspray to do the same job. A cloud was sprayed into the air, and the glass passed through it. Never tried it, so don't know if it works!