FEP^™ sample tube liner 

Thin-wall FEP liner minimizes filling factor losses of using inserts and protects NMR tube from etching effects of strong acids containing fluoride ions. Liners are 8 in. L and fit snugly into most common 7 in. L thin-wall tubes. A PTFE plug to close each liner is included. Not recommended for elevated temperature studies.

Wilmad is a registered trademark of SP Industries.

FEP is a trademark of E.I. du Pont de Nemours & Co., Inc.