(Almost) Blackest Black Available For Sale to Public
You may have heard of the U.K. vertically aligned nanotube array (VANTA) super black coating, created in 2006 and advertised to absorb 99.965% of visible light directed at it. However, U.K. export restrictions prevent private individuals - with the notorious exception of artist Anish Kapoor in 2016. If you wanted to see Vantablack yourself, you would have to be satisfied with either a sample from Surrey NanoSystems or with the purchase of the $95,000 MCT luxury watch, which feature vantablack minute and second hands.
Now a U.S. firm, NanoLabs, has provided for sale its own nanotube based black pigment, called Singularity Black, which can be bought for $50 per 20 milliliters. The pigment has a much less impressive 98.5% absorption, but it's effectiveness is demonstrated in a collection of images made in concert with artist Jason Chase.
The material must be heated to 600 degrees Fahrenheit to boil off the binder material and, although water proof, the surface becomes no-touch in order to keep the best black effect. These requirements make finding the right place to use the paint challenging.
Artist Stuart Semple released his own "Black 2.0" blackest paint. While quantitative data for "Black 2.0" isn't available, the product was featured impressively in the YouTube video "Light vs. Dark". Semple has also released a "pinkest pink", "greenest green", and "glitteriest glitter". Other user anecdotes have been that "Black 2.0" is not as dark as some other commercial grade paints. Semple's paint is available for the much more reasonable price of $18.90 for 150 milliliters at Amazon.