whatman 7585-004 PTFE 47MM 0 5uM 100/PK,whatman 7585-004 PTFE 47MM 0 5uM 100/PK 6119.61 7590-002 PTFE 25MM 1 0uM 100/PK 4364.71 7590-004 PTFE 47MM 1 0uM 100/PK 6262.75 7592-104 PM 2 5 PTFE W/PP RING 50/P