The test must be carried out firstly in laboratory conditions in order to see change of the color.
There are 3 alternatives;
1. 12 g/L Setalan OSK - N + 8 g/L Caustic Soda 48 Be, 98 C de, 48 min.
2. 10 g/L Setawash L400 + 10 g/L Soda Ash, 98 C de, 48 min.
3. 6 g/L Setalan OSK - N + 4 g/L Caustic 48 Be, 98 C de, 48 min.
Thursday, March 11, 2010
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