... use,This machine adopts two level control negative pressure device ( negative pressure pump for gas storage for first order ... air bucket capacity 5000ML operation, suction pressure for second order suction pressure, is particularly applicable to mute abortion suction ... :1000ml×2;8,Work environment:Temperature:+5°C~+35°C,Relative humidity:≤80%(25°C),Atmospheric pressure:86KPa~106KPa. suction machine