Film "B", was originally made for generic medical radiography, like bones structures examination, and therefore destined to be exposed to X-rays. Converted to regular format it can also be used for analog photography. Being coated with sensitive emulsion on both sides, there is no notch on the sheet films so it can be loaded both ways. This particularity, and the lack of anti-halation layer, will give the pictures a special look that creates a very unique aesthetic.
As an orthochromatic film, it can be processed by inspection in open trays under safelight, or in a regular tank. Radiographic films are more fragile than others and need extra care during all part of use and process to avoid any risk of scratch.
Being sensitive only to blue light, film "B" is recommended for portrait and urban photography.
Base: Polyester, 175 μm
Spectral sensitivity: max. 450 nm
Darkroom lightning: red, min 575 nm
Exposure: 125 ISO
Processing: 125 ISO, Tetenal Ultrafin, 20°C, 1+10, 3-4 min