Dosage & Handling

For pre-defoaming of surfactant concentrates with low water content, antifoams can be incorporated at a dosage level of approx. 1 %. This initial dosage level can be optimized by fine-tuning until the optimum performance level is achieved.

Alternatively, antifoams can be added at an early production stage when the water content is as low as possible. After the antifoam has been readily dispersed in the surfactant concentrate, the concentrate can be diluted to the final application concentration.

During textile processing in highly diluted aqueous media,defoamers can be added to provide reliable foam control by itself or in addition with the antifoams already incorporated into the surfactant concentrates.

When applied in systems containing much water, it may be advantageous to use defoamers in low concentration pre-dilutions. Due to many different process conditions encountered in practice, the dosage of antifoams/defoamers in systems with high water content may vary from as low as 0,005 % up to 0,2 %. Preliminary tests are helpful and recommended.

Antifoam concentrates, pre-dilutions and ready-to-use dilutions have to be stored at room temperature and proteced from frost.