United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 119
INLET Fig. 53. Simple tank development arrangement using enamelled tanksfor developer and hypo. All solutions have the same temperature. … Bracket Fig. 54. Simple ventilator for dark room. All inner surfaces to be paintedred or black. 112 X-RAY PHYSICS 113 Ventilation. Good ventilation is essential in a dark room, not aloneto increase the efficiency of the operator but because aclose musty atmosphere is bad for the sensitive…
