Torrit Grey Paintings

Once a year Gamblin paint company uses a "Torrit" system to clean the pigment from their chimneys so it doesn't go into the atmosphere. They take this dust and recycle it. I received a small tube of this by chance.Initially I used it as an under painting but after seeing the luminosity I decided to leave the painting grey. I now love to paint with this grey. Unfortunately you can't buy it. Sometimes it is given out by art stores.