Additional screw caps and septums are conveniently packaged for use with the Screw Thread sample tubes. White silicone rubber lined solid caps resist most solvents; Teflon lined solid caps (see below) are used where solvent attack occurs with the white silicone rubber. The open-top cap and Teflon / Silicone septum combine to give the most inert closure with needle access.
Cap,open-top, for Screw Thread Sample Tubes, Cap only. Septa sold separately as NE-3208
8mm; thread 8-425
Price / Pack of 12
Cap, open-top, for Screw Thread Sample Tubes, Cap only. Septa sold separately as NE-3215.
15mm; thread 15-425
Price / Pack 12
Cap,solid-top, Screw Thread Sample Tubes, Caps and Septa
Silicone/white rubber liner, 8mm; Thread 8-425, Pack of 12
Cap, solid-top, Sample Tubes, Caps and Septa
Teflon liner, 8mm; Thread 8-425
Pack of 12
Cap, solid-top, Screw Thread Sample Tubes, Caps and Septa
Silicone/white rubber liner, 15mm; Thread 15-425
Pack of 12
Septa, Teflon/Silicone, Screw Thread Sample Tubes, Caps and Septa
for 8mm cap
Pack of 12