Composition: Cr Sn Co Si Fe Ni References: Maximum temperature 2300 F. Do not use Zinc in glazes. Must contain 6.7% to 8.4% Whiting. Mason Stains Home Page 6381 Blackberry Wine - 1/4 pound we no longer carry this stain in any size 6381-14 Blackberry Wine - 1/2 pound 6381-12 Blackberry Wine - 1 pound 6381-1 Blackberry Wine - 5 pounds 6381-5