Description General description Shigemi NMR microtubes offer high precision quality in NMR spectroscopy. The NMR microtubes are made out of a special type of hard glass wtih excellent chemical durability, and are magnetic susceptibility matched to each of the solvents they are identified with. The Symmetrical NMR microtube consists of outer tube and insert with these features: • Magnetic susceptibility matched to a variety of solvents for the best resolution in these solvents using minimal amount of sample • The small sample size will not affect the spectral resolution or the sidebands • Each microtube assembly consists of an insert and an outer sample tube • Suitable for 900 MHz NMR instruments Choose a bottom length that most closely matches the probe coil.