I found an unopened 100 ft. roll of this 35 mm film in my freezer, where it has lived since I bought it way back, I think from Freestyle, and can no recall which film manufacturer made it.
Arista film brands have always been rebrands. The Arista .EDU line was original Forte, replaced by Foma as .EDU Ultra; they are also known to have relabeled Kodak and Ilford films rather a while ago. I agree, Pan F is a good guess for ISO 50 under the Arista label. Efke is another possible candidate; they had an ISO 50 film and might have supplied film for rebranding for a time.
2008 and 2009 were the some of the worst years for analog photography, Although both Iiford and Kodak claimed that they did not sell their branded film for rebranding, in those few years I think both did.
Yes, Arista was a rebranding product, and I believe Pan F(+) was the film I bought, but it's good to ask others, as l'm trying to avoid opening it just to clip a test strip to make sure.
Ekfe, is my second guess, I'm pretty sure it's no a Kodak product, vaguely recalling a conversation on that topic around the time you I bought that it.
Cheers, more conversation on this question will be helpful.
Arista was, and is, Freestyle's house brand. Everything with Arista on it has been made by others, pursuant to contract.
As Paul Howell posted above, in and around 2008 the world was awash with film that was difficult to sell.
I used Arista 120 film years years ago that had "Exposed Ilford Film" printed on the sealing
label at the end of the roll. If your film box has Made In England, Made in Great Britain or
Made In UK printed on it, it's almost certainly re-branded Ilford film. If it is NOT Arista.edu
or Arista.edu Ultra, it was most likely made by ilford.
Kodak didn't have an ISO 50 product, like, ever. Panatomic X was ASA 32 after the 1960 ASA rating change, and Tech Pan was officially rated at ASA 25 (as I recall), and that's the slowest B&W camera film I recall Kodak offering.
There is pretty good understanding that Freestyle did obtain and rebrand some Kodak products at one time -- Tri-X 400, as I recall. Obviously not likely to be sold as ISO 50...