Novamet High Purity Black Nickel Oxide is a unique fine powder oxide of exceptionally high purity and particle surface characteristics. It is made using a proprietary process using very high purity carbonyl nickel powder as the feed material. It is offered in two commercial grades, “A” grade with a typical Microtrac D50 of 6 – 10 microns and the finer “F” grade with a typical D50 of 1 – 2 microns.