Mystery bulk film

[Filzkoeter]

So I bought a Computrol bulk film loader on eBay a few days ago and today it arrived.


Inside were around (I suppose) 15m of film (that's what the rest-film-counter was indicating).
Alright, the seller opened the bulk loader to take some pictures :bang: ....but that's okay, because the film is on a metal daylight spool. So I suppose around 1-2 meters of it will be lost, the rest should be okay.

Now the thing, I don't know what this film is and neither does the seller.

-it's a very pale yellow color on both sides
-it's on a (30m ?) metal daylight spool
-KS perforation
-when developed (I only tried to develop a piece in daylight in ~1+50 HC110) the emulsion side is quite shiny. Emulsion side and back-side look nearly the same.
-when fixed it has the clearest base I've ever seen, it's nearly invisible 😉

That's the daylight spool (seller's photo from ebay):

and this is how the film looks:

What could it be? Has anyone ever seen such a film stock? How should I expose and develop it (I can choose Diafine or HC110)? 😛

 

[filmtwit]

From my days of working in motion picture film labs that looks to be light struck motion picture film leader (B&W).
The squared KS perforations would indicate it it's probably Finegrain Print film like Kodak 5302. Couldn't tell you if it's estar of Triacetage stock.
I've shot the stock in 16mm before and i think it has a ASA range on something like 8-18asa.

Start with Rodeinel sit stand 1 hour.

 

[Dwig]

...
The squared KS perforations would indicate it it's probably Finegrain Print film like Kodak 5302. Couldn't tell you if it's estar of Triacetage stock...

Sounds like a good guess to me. 5302 is on triacetate, if memory serves. It has a speed similar to enlarging paper, can be handled under safelight, and will develop well in Dektol. It has no anti-halation layer and has no grey pigment in the base as its intended use is for making projection positive from B&W negatives.

I would suggest that the OP try developing it like paper (e.g. Dektol 1:2 at around 2 minutes) and then fixing. If you process and fix a length of around a foot or so you should see the type number in the edge print.

Being orthochromatic or blue sensitive and without any anti-halation layers it makes a very poor general purpose camera film. I will work as a copy film as it is very fine grained. It needs an energetic, relatively high contrast developer. Dektol works well.

 

[Filzkoeter]

Nope. No Kodak 5302 here.

It's "Agfa Gevaert S 140 11103(or 2)7"

Still quite fogged (especially around the sprocket holes). Will cut and toss another ~2m then it should be fine.

 

[filmtwit]

If it's Agfa Gavert motion picture film, they stopped making 35mm B&W release film back in the late 90's from what I remember

 

[Filzkoeter]

I think I can trash that roll. It's really badly fogged and even at iso 6 (in Diafine) it's thin as hell.
Well, it was worth a try 🙂 + it came free with the loader, so nothing's lost.