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BUNGARD - Sodium persulfate

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250g for one liter.
Temperature of etching: 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.

250g for one liter.
Temperature of etching: 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.

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