Home About Us Resources Products Services Contact Us Multiwall carbon nanotubes, hollow structure, produced by CVD, purified. Purity > 95%, residuals may include iron, sulfur. OD 15 ± 5 nm ID 7 ± 2 nm Length 1-5 microns SSA 200 - 400 m2/g [back] PD15L15-5g$650.00 updated: 03/29/2017