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Sodium persulfate , 120gr

This product is recommended for use in tank etchers. The work temperature should be 40 - 50 °C. The copper capacity is limited to less than 30 g/l due to the long etching time. Etching rate is approx. 1.5-7 µm / min. Give 200-250 g of Sodium persulfate to 1 litre of water Delivery unit: 1kg bag.