16 minutes, 30 seconds at 20°C/68.0°F
Followed DigitalTruth's guidelines and performed in Paterson two-35mm spool tank:
(1+25) @ 20°c for 16mins, 30secs.
Rinsed with (very hard) tap water (@20°C).
Agitated with spigot for 1min, then first 10sec of each minute.
Stopbath: 1min continuous agitation with spigot.
Final wash: 10min continuous tap water. 30sec rinse with rinse aid.
Images scanned via DSLR method.