. The book of photography; practical, theoretical and applied. Fig. 198.—Spring Drum for Developikg Films. A liberal quantity of developer should beused to ensure perfect immersion. Anydeveloper may be used, but pyrocatechinis recommended, rodinal and synthol alsobeing very satisfactory. Developmentshould be continued until the negative nolonger gains in density. The film is thenrinsed and fixed in a hypo, bath of doublethe ordinary strength. The most con-venient method is to place the films in ajar or jug containing the fixing solution, ment, the film is hardened in a formalinsolution in the
. The book of photography; practical, theoretical and applied. Fig. 198.—Spring Drum for Developikg Films. A liberal quantity of developer should beused to ensure perfect immersion. Anydeveloper may be used, but pyrocatechinis recommended, rodinal and synthol alsobeing very satisfactory. Developmentshould be continued until the negative nolonger gains in density. The film is thenrinsed and fixed in a hypo, bath of doublethe ordinary strength. The most con-venient method is to place the films in ajar or jug containing the fixing solution, ment, the film is hardened in a formalinsolution in the proportion of 2 oz. of formalin(Schering.) to 2 oz. of water. This may beused repeatedly, until it becomes tooweak. The film should be unrolled, andfolded across the dish from end to end,as shown by Fig. 200 ; taking care, how-ever, that each part of the film is immersedbefore another portion is folded over the film about rapidly, so as to. Fig. 200.—Method of Folding Cristoid Film. and to stir them up for a few will probably be complete in abouttwo minutes, but the films should in nocase be removed until perfectly free from
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphotography, bookyear
