| 配方类型： |
MISCELLANEOUS |
| 配方说明： |
Improving the wearing Qualities of Toothbrushes (U.S. Patent
2,109,579) |
| 配方组成： |
Time/5-10 minutes
"Aerosol OT"/0.1 G.
Carbon Tetrachloride/1000 cc.
Temperature/35-40'C.
Paraffin Wax/20 g. |
| 配制方法： |
The wearing qualities of toothbrushes made from hog bristles may be greatly improved by treating in this solution. |
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