Palm's Liquid Copper Chloride is a high copper metal concentration solution containing 280 g/l or 37 oz/gal of copper metal. Liquid Copper Chloride is especially produced for use in high quality surface finishing, electronics and other industrial applications. Liquid Copper Chloride is the purest form available commercially. It is manufactured to demanding specifications from carefully selected raw materials and is subjected to stringent quality control standards and testing measures. Made in USA.