简易自动过滤装置如图所示,由内径12毫米和内径4毫米的U形玻璃管组合而成。操作时用软橡皮塞将U形管紧密地连接在盛待过滤掖体的瓶口上,并使虹吸管插到瓶底,而进气管不要接触到液体。将过滤漏斗置于进气管和虹吸管下端,使其高度在滤纸边缘下10毫米左右。用洗耳球把待过滤液体从虹吸管的弯曲处(细U形管管口)吸出至低于瓶内液面时,液体靠虹吸作用就会自动流入漏斗内;待液面淹没进气管管口时 Simple automatic filtration device shown in the figure, from 12 mm in diameter and 4 mm in diameter U-shaped glass tube made of a combination. Operation with a soft rubber stopper will be tightly connected to the U-shaped pipe in the mouth of the bottle to be filtered filter body, and the siphon tube inserted into the bottom, and the intake pipe do not come into contact with the liquid. Place the filter funnel at the lower end of the inlet pipe and siphon pipe to a height of about 10 mm below the edge of the filter paper. Use ear washing ball to be filtered liquid siphon from the bend (fine U-shaped tube mouth) to less than the liquid level in the bottle, the liquid by siphon effect will automatically flow into the funnel; to submerge the liquid into the trachea Time