Black Oxide and Zinc Phosphate Coatings Produced On The Same Process Line

Dual Process

Metal finishers now can achieve both a high quality black oxide finish and a zinc phosphate finish using the same processing system. Safe, simple and inexpensive to operate, this innovative process line from Birchwood Technologies operates with Near-Zero™ water consumption. Read More


For Production Finishing We Offer Free Sample Finishing to Evaluate Options
Free Sample Finishing to Evaluate Options

Analyze, Compare, and investigate In-House Finishing. Download PDF


Brush-On Presto Black® Gel, Antique Brown® Gel, and Antique Black® Gel Available From Birchwood Technologies For Coloring Furniture Components, Architectural Railings, Metal Panels, Facades And More With A Durable Finish

Brush-On Gels for Coloring Furniture Components with A Durable Finish

Designed for use on any size parts, the new Presto Black® Gel, Antique Brown® Gel, and Antique Black® Gel formulations solve the application challenges of liquid products while producing an attractive, high quality, durable darkened finish.

Presto Black Gel is ideal for most non-stainless iron and steel surfaces. Without runs or drips, any size surface in vertical or horizontal position can be converted to a beautiful and durable black finish. Simple and safe to use, Presto Black Gel is applied at room temperature. Similarly, the Antique Brown and Antique Black Gels are designed for use on brass, bronze, and copper substrates to produce attractive, durable brown/black finishes on these metals.

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Tru Temp® Black Oxide Color Change Test Procedures

Color Change Test Procedures

Test procedures for Oxyprime® (XP, XPL, Powder) Surface Conditioner, and Tru Temp® Low Temperature Black Oxide. Watch Video

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