The valve is also capable of placing the second chamber in fluid communication with the first chamber to provide a second volume range of the multivolume pipette.
阀门也能够将第二腔设置成与第一腔流体连通，以提供多容积移液管的第二容积范围。
2
When you use this ERM, please carefully break open the ampoule at the neck and pipette 10 ml from the ampoule into 250 ml volumetric flask and bring to volume by 0.1% NaOH solution.
When you use this ERM, please carefully break open the ampoule at the neck and pipette 10ml from the ampoule into 250 ml volumetric flask and bring to volume by purified water.