Vacuum distillation using the dropper with the exhaust port and the access protection tube to prevent leakage of liquid directly into the vacuum pump.
减压蒸馏使用带抽气口和防护滴管的接液管，可以防止液体直接泄露到真空泵中。
2
Vacuum pump is a vacuum distillation of the core of the compounds according to the boiling point to be distilled and compound use, choose the appropriate pump.
真空泵是减压蒸馏的核心部分，根据待蒸馏化合物的沸点和化合物的用途，选用适当的真空泵。
3
A dry washer cooling device used for dry washer distillation, drying and recovery consists of a refrigerator, a cooling liquid tank and a pump.