Copper Etchant Ammonium Persulfate crystals are used as an alternative to the traditional ferric chloride to produce a cleaner copper etchant solution. Mixed product must be stored in a ventilated container. One kilogram of crystals will produce four liters of etching solution when mixed with water.
Not compatible for use with Etch Resist Pen (Cat. No. 416-RP).
Specifications:
• Transparent solution allows visual inspection • Will not stain carpet or clothing • Alternative to ferric chloride • 1 kg of solid crystals makes 4 liters of solution