Bingham News | 1922-11-25 | Page 5 | Paper for Dark Room

Paper for Dark Room. Modern photographic plutes are se sensitive that often a screen of red glass In the dark room Is not snffldent to prevent fogging. A French photo graphic expert gives the following prescription pre-scription for making a paper screen which is 50 per cent more effectived than red glass: Take unsized paper and dip it thoroughly In 100 cable-centimeters cable-centimeters of water containing six. grams of tartrazlne. Then pass it over blotting paper and dry It T render the coloring matter more a herent, a little gum arable may he added add-ed to the solution. J