These fittings and frits are made of 316-grade stainless steel.
The top and bottom endfittings are engraved with the pore size of the frit. The endfittings will connect to the 10 to 32 PEEK or stainless steel nuts and ferrules on a standard HPLC system.
The endfittings on the glass columns contain Pyrex frits with a nominal 10 µm pore size. The materials in the glass column fittings that come into contact with the sample and the mobile phase are chlorotrifluoroethylene and tetrafluoroethylene. The endfittings will connect to 1/4-28 and also to M6 nuts and ferrules.