WARNING! Contains Lead. Read the MSDS for cautionary statements.
35-45 g cake
Rublev Colours Stack Process White Lead is made in small amounts according to 16th century Dutch method, differing little to the "stack" process of history. It is basic carbonate of lead and usually contains about 70% of lead carbonate and 30% of lead hydroxide. This grade of white lead is composed of the actual flakes that fall off the corroded lead sheets and the white lead that is mechanically removed. It is washed and ground ready for use by the artist.
Stack process white lead is ground to about the same granularity typically found in old masters' paintings. This pigment is available as small round cakes. The small cakes are easily broken and ground in the paint vehicle or in water. We recommend first crushing the cake in a mortar with a pestle, adding a small amount of vehicle to reduce dust, and then scrape the mixture onto a flat surface to grind further with a muller.
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