Venice Turpentine is used in mixing your own mediums. Its properties include adhesiveness and an enamel-like gloss. Add as a plasticizer and gloss enhancing agent to oil colors, varnishes and mediums. Avoid using it in excess.
Richeson Mediums are tested in accordance to: ASTM D-4236 and bear safety labels to the standards issued by ACMI. While some Richeson mediums are AP approved non-toxic, certain mediums bear the CL label with safety warnings.