Stopbad 500ml Acetic Acid 60%
The stop bath is mixed as follows:
1 part acetic acid (60%) + 30 parts water.
Length of treatment in the 2% acetic acid stop bath: 20 – 30 s* (at 20 – 25°C).
Longer treatment (more than 1 minute) would make washing more difficult and reduces the storage lives of prints.The stop bath can be replenished with a 5% acetic acid bath with mechanical processing: part acetic acid (60%) + 11 parts water.