Test tube closures or caps

5 mm Aqua NMR Tube Cap, Fluorochem 521-AQA-100X1EA

5 mm Aqua NMR Tube Cap, Fluorochem 521-AQA-1000X1EA

5 mm Assorted Color NMR Tube Cap, Fluorochem 521-ASST-100X1EA

5 mm Assorted Color NMR Tube Cap, Fluorochem 521-ASST-1000X1EA

5 mm Black NMR Tube Cap, Fluorochem 521-BLK-100X1EA

5 mm Black NMR Tube Cap, Fluorochem 521-BLK-1000X1EA

5 mm Blue NMR Tube Cap, Fluorochem 521-BLU-1000X1EA

10 mm Red NMR Tube Cap, Fluorochem 521-C-100X1EA

5 mm Fuchsia NMR Tube Cap, Fluorochem 521-FUH-100X1EA

4 mm Blue NMR Tube Cap, Fluorochem 521-G-1000X1EA

18 mm Red NMR Tube Cap, Fluorochem 521-K-100X1EA

24 mm-25 mm Red NMR Tube Cap, Fluorochem 521-L-100X1EA