Hi guys,
The screen poligel is very similar to the Prazio Montage Gel. I even have 3 or 4 tubes of the screen gel floating around the shop.
I used to use the Prazio Montage Gel and it was very effective for extremely damaged film. Although it was a royal pain to clean up.
The Prazio Anti Newton Oil was not as effective as Kami but i still use it on occasion if the film im scanning has pencil or pen retouching on it.
A few tips for gel mounting that i learned. You need to use more pressure to remove the air bubbles since the gel is much thicker then oil.
I ran a small bead of gel on the edge of the film that faces the roller (top and bottom of the film). You will get a feel for how much to use after a while.
Cleanup is the hardest part. I found that Anchor Film Kleen works well as does the Prazio film cleaner.
I finally gave up using the gel because of the cleanup time and went with Kami. Kami is one of the best fluids for drum scanning and I use it for 99% of our drum scans.
The best way i have found to apply Kami is to place it in a small spray bottle like a Pec 12 spray bottle (cleaned well).
Do not use the cheap ones that you find at the 99c store. Kami dissolves the O Rings, within a few days the sprayer is done for.
Regarding older films, Kami has no detrimental effects that i can see. I have scanned negatives from the 40's and they came out fine.
I think gel might be worse for them because of the cleanup effort. I do have some old Kodak Nitro Cellulose 4x5 stock that still shoots ok.
One day i have to try to scan it. And yes it does burn fast!!