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indelible laundry-marking ink
配方类型: |
INTRODUCTION |
配方组成: |
water/40 fl oz stir until dissolved. powdered gum arabic/1 oz b) silver nitrate/4 oz powdered gum arabic/4 oz water/10 fl 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. |
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