It is highly recommended that a pure PTFE filter material be used that does not have any flow-through support bonded to the back and has an overall thickness of 40 +- 20 um.
Il est vivement recommandé d &apos; utiliser un matériau filtre en PTFE pur ne comportant pas de support en matériau poreux collé à sa face arrière et ayant une épaisseur totale de 40 20 μm.