Weiser Rust

Source explicitly states that these are volume measures. Numeric amounts are preserved as source-stated parts; source percentages are preserved numerically where printed. Test on tiles; use appropriate ventilation and PPE, avoid inhaling dust, review raw-material safety information, and verify functional or food-contact suitability with fired-glaze testing.

Ingredients

Material%
Colemanite81.48
Copper Carbonate27.779999999999998
Nepheline Syenite 270m Minex18.52
Black Nickel Oxide7.41
Tin Oxide7.41