Yes but when I went to the recycling (sorting) facility in San Mateo they remarked that their plastic sorting systems work by infrared reflection and so cannot

Yes but when I went to the recycling (sorting) facility in San Mateo they remarked that their plastic sorting systems work by infrared reflection and so cannot see black plastic. They said that because of this they are unable to process black plastic entirely. I got the sense that there’s room for improvement. Bonus slow motion footage of their processing machines: https://imgur.com/gallery/IK5zKkO https://imgur.com/gallery/IK5zKkO