Sp Scienceware Wilmad Disposable Nmr Tube Caps, 5.0mm Dia, Different Colors Help Track Samples Based On Various Reference Solvents, Pack Of 1000

Details:

Alert: When using Chloroform or Acetone as a reference solution, please avoid direct contact between the sample and the disposable cap, and avoid long term storage over 2 hours. If these conditions cannot be avoided, please use PTFE tube caps.