配方类型:

ELEMENTARY PREPARATIONS

配方说明:

Indelible Laundry-Marking Ink

配方组成:

Water 40 fl oz
Stir until dissolved
Powdered Gum Arabic/1 oz
Water/10 fl oz
A: Silver Nitrate/4 oz
Powdered Gum Arabic/4 oz
A: Soda Ash/1 oz
Lampblack/2 oz

配制方法:

Stir this in a glass or porcelain dish until dissolved. Do not expose the mixture to strong light or it will spoil. Then pour into a brown glass bottle. In using these solutions, wet the cloth with solution A and allow to dry. Then write on it with solution B using a quill pen.