I.Technical parameters 1. Operating environment: temperature 0-40 degree, relative humidity: ≤90%RH, power supply: 220 v / 50 Hz,be able to continuous operation. 2. Piezometric tube: ф 8 x 600 mm, 6 eas. 3. Experimental container: ф 200 x 300 mm, organic glass, containers are: air inlet port, liquid inlet port, liquid outlet. 4. Pump power: 35W, rated power: 220 v / 50 Hz, maximum pressure: 0.03 ...