Pro-Craft Silver Oxidizer 8 oz. Carl Zeiss OttoFrei 135

OttoFrei 135

Standard North American B (9/16") fitting on the gauge/tank end

Designed for use in all Kerr 30 troy ounce (approximately 1 kilo) Electro Melt models

task-specific positioning

Convenient box of 12 sheets for continued bench use

Pro-Craft Silver Oxidizer 8 oz. Carl Zeiss OttoFrei 135Pro Craft Silver Oxidizer is a non corrosive solution designed to blacken silver or copper when applied at full strength. When diluted with water, the oxidizing action slows, giving you precise control over a full range of gray tones from light patina to deep black. No heating required; the solution works effectively at room temperature, making it easy to use at the bench. Features Blackens silver or copper at full strength Dilute with water to