CAUTION: Some of these materials are toxic in their dry unfired or fired state. You should always use a dust mask when working with these materials. We have an inexpensive, Toxic Dust Mask available. Also Material Safety Data Sheets are available on request or can be downloaded from MSDS Search. These materials have always been potentially harmful, so let’s get serious about safe handling. AL-BA Alumina Hydrate 1 pound alumhyd1$1.75 Barium Carbonate 1 pound - (Toxic) baco3-1$1.70 Bone Ash 1 pound ca3po4-1$1.70 5 pounds alumhyd5$6.50 5 pounds baco3-5$6.75 5 pounds ca3po4-5$4.20 10 pounds alumhyd10$11.80 10 pounds baco3-10$12.80 10 pounds ca3po4-10$8.00 25 pounds alumhyd25$27.00 25 pounds baco3-25$30.50 25 pounds ca3po4-25$19.00 50 pounds alumhyd50$50.00 50 pounds baco3-50$57.50 50 pounds ca3po4-50$36.00 100 pounds alumhyd100$90.00