Photo board Exposure times: 30W UV tubes 60 - 90s 1000 W halogen 45 - 70s 250W Nitraphot 12 - 15 mi 500W Nitraphot 6 - 7 mi At a distance of approx. 30 cm and max. format 150x200. Development times: at 25 - 30°C in 25 - 90s depending on how fresh the bath is. With a fresh ammonium persulphate batch of 40 - 50°C: 5 - 10 minutes. Please see our catalogue for more information on exposure and etching times. https://elecena.pl/product/9708539/photo-board-laminated-paper-one-sided-160x100mm 2017-08-06 https://elecena.pl/product/9708539/photo-board-laminated-paper-one-sided-160x100mm 2017-10-19 https://elecena.pl/product/9708539/photo-board-laminated-paper-one-sided-160x100mm 2018-01-26 https://elecena.pl/product/9708539/photo-board-laminated-paper-one-sided-160x100mm 2018-12-16 https://elecena.pl/product/9708539/photo-board-laminated-paper-one-sided-160x100mm 2021-05-05 https://elecena.pl/product/9708539/photo-board-laminated-paper-one-sided-160x100mm 2022-11-05