Chromatography Forum

from several people I get different stories bout the Bead probelm on the 6890. One lab changed the manufacturer and have extendend the life of the bead. One lab stated a different operation is necessary to get the life of the previous beads. A salesman mention a new bead from germany is available that corrects the problem. Does anyone have anything to add? Is there a better bead or is the problem with the operation of the system ?Is there a procedure for conditioning or a voltage setting that need to be used to get the life out of the bead.
John