The campeche wood watercolor set. A great set to professionally play and paint creating rare and unusual logwood colors that have their origins in historical dye applications. The set contains a full pan of campeche wood, half pan of copper vitriol3, full pan of brass, half pan of aubergine night, pinch pot vials of alum and salt.Comes in a hexagon tin with a different antique card each container. You can find more instructions on instagram on how to use this wonderful plant dye under the hash tag #emalogwood. Tin size is 3 x 2 3/4 x 1. Something unique for the artists desk. Thank you for visiting my watercolor shop. This item is made of plant dye and logwood, metal, verdgris, salt, alum, the watercolor shop.