After years of research (and several not-so-successful attempts) we've got the answer for large large format processing: the SP-8×10! Simple: No frames/holders to fumble with in the dark. Just take
stearman press publishing and photographic supply – Stearman Press LLC
Foilcraft Junior (Package 1)
Stearman Press LLC
Creating the Stearman Press SP-8×10+ film development system - EMULSIVE
Creating the Stearman Press SP-8×10+ film development system - EMULSIVE
批发塑料袋, 聚薄膜-管材,片
SP-8x10 Daylight Processing Tray for 8x10, 5x7, 4x10, 4x5, and 9x12cm
Developing sheet film in the Stearman SP-8x10 daylight tray
Developing sheet film in the Stearman SP-8x10 daylight tray
SP-8x10 Daylight Processing Tray for 8x10, 5x7, 4x10, 4x5, and 9x12cm
Color Processing and the Thermal Profile of the SP-8x10 – Stearman Press LLC
Developing sheet film in the Stearman SP-8x10 daylight tray
Color Processing and the Thermal Profile of the SP-8x10 – Stearman Press LLC
SP-8x10 Daylight Processing Tray for 8x10, 5x7, 4x10, 4x5, and 9x12cm – Lincoln Camera Shop Online, LLC