Rockdefoam SLT-660 can be added directly to the foaming system or can be diluted with water prior to addition.
Rockdefoam ST-660 is effective at very low concentrations. 10 to 50 ppm is a good starting point. The concentration can be increased or decreased to establish the most economical concentration. Rockdefoam ST-660 is stable in acid, alkaline or neutral system.