Whole instrument adopts ABS material and is formed by plastic injection machine. DF-600 is a brilliant technical product with nice looking & good functions. Vacuum pump adopts twin-cylinder non-oil design that features electricity saving, low noise, non maintenance & long life. DF-600 is necessary item of big hospitals (wards or surgery room), medium/small clinics, medical nursing & day care center. Features: The instrument is installed with one moving detachable square tray to put appliances and hold suction's consuming parts. The suction bottle is made of PC, can resist hit and high temperature & pressure disinfection. But any chemicals such as antiseptic solution, cleaner, etc. can't be put in the bottle to avoid bottle breaking. Volume of suction bottle is 6000c.c. Two bottles are connected. When one bottle is filled with water, water will automatically flow into the other bottle. To secure this unit, there are two automatic full water stop devices installed. One filter is installed between the suction bottle and the unit. When it's polluted, please immediately replace it. The instrument can be pushed, pulled or turned at original place for easy movement. Front two casters are installed with locking brakes.