Now you can purchase single wall carbon nanotubes TUBALL directly from Sigma Aldrich catalog .
Sigma Alldrich is an American multinational chemical, life science and biotechnology company. It distributes about 100,000 chemicals and 30,000 laboratory equipment products. While headquartered in St. Louis, Sigma-Aldrich has operations in approximately 40 countries. It has a scope of one million individual customers worldwide with 88 000 accounts.