It definitely wasn't directly under the white foam. I unscrewed the top cap, the. Pulled out the donut hole foam and then after that came the solid piece of foam and then resin. It wasn't until after I turned the cartridge upside down and dumping out old resin did the round plastic pie shaped pieces come out. The lines you see on the bottom edge of round foam were from the two ribs running down the inside of the cartridge wall.
The piece on the right sits on top of the pie plate in mine.I am starting to refill my own DI cartridges, but want to know WHERE the pie shaped plastic piece goes in the cartridge? I unscrewed the cap to dump out old resin, took off the white foam pieces first, but then the plastic piece came out with the resin. Where does it go??
Sorry I just looked and that was wrong.
It's the bottom. The sponge goes on the resin and the pie screws onto it. Then you put the pie on the bottom of the clear sleeve and your done.
I am thinking you are correct. The end I can't unscrew literally has nothing at that end really. the end you can remove has the screw on cap, a sponge with a hole in the middle, and then a second solid round sponge that goes stacked with the first sponge. The only other part that came out was this round plastic piece with the pie shapes in it, and Like I said, it was down in the resin when I tipped the cartridge upside down to dump it out.
