MG Chemicals 410-1KG Ammonium Persulphate Copper Etchant, 1 Kg Solid Crystals Bottle
Transparent solution allows visual inspection. Will not stain carpet or clothing. Compatible with etch resist pens. 1 kg of solid crystals makes 4 liters of solution. 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. ROHS Compliant.