化学配方数据库
| 配方类型: | INKS |
| 配方说明: | Hectograph Ink Base (Black) (U.S. Patent 2,752,254) |
| 配方组成: | Rhoduline Blue/15-20 Crystal Violet/35-45 Chrysoidine/40-45 |
| 配制方法: | Disperse 100 g. of above in 80 to 200 cc. water and dry to moisture content of <2%. |
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