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. Compatible with tin etch resist. One kilogram of crystals will produce four liters of etching solution when mixed with water. Not compatible for use with Etch Resist Pens.
- Compatible with tin etch resist
- Not compatible for use with Etch Resist Pen (Cat. No. 416-RP).
- *Note: We cannot ship this item. It must be picked up in store.