配方类型:

PHOTOGRAPHY

配方说明:

Glycerin "Sandwich" for Photography

配方组成:

配制方法:

For enlarging a photo from a wet negative, make a glycerin "sandwich," using glass carriers. To do this, a little glycerin goes onn the center of one glass, then the wet negative, then a little more glycerin topped by the other glass. Air bells are removed by squeezing lightly.