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Air Valves at eluent bottles: how can I make sure that they are changed regularly?


The b.safe Air Valve provides the necessary pressure compensation during solvent extraction. The PTFE membrane inside (pore size 1 µm) restrains smallest pollutant particles from the eluent and allows only as much ambient air as necessary to enter.

After six months, it has to be exchanged to guarantee the lasting reliability of the system. In order not to forget this, the Air Valve has a practical service life indicator – just push the button and the white display starts to turn red. Smart detail: when the time period is over you can clearly read the letters “CHANGE”

For documentation in GMP/GLP regulated laboratories, the Air Valve is also equipped with a title block so that you can write down the change date and your initials.