Choosing the Correct Antifoam Concentration When testing the effectiveness and practicality of a silicone antifoam from Dow Corning, a good starting point is to add the antifoam to the foaming medium at a concentration that represents 10 parts per million (ppm) silicone (polydimethylsiloxane). Typically, 10 ppm is the maximum concentration of silicone allowed according to FDA and European food additive regulations. If appropriate, further reduce the antifoam addition level to obtain the required level of foam control. However, you should always refer to local food profiles to determine the maximum level allowed for the specific type of food. You can use this formula to calculate how much silicone antifoam should be added to achieve the recommended ppm level of polydimethylsiloxane: (ppm polydimethylsiloxane) x (amount of solution to be defoamed1) (% active ingredient in antifoam2) x (10,000) 1 2 Use the same units (liters, gallons, pounds, etc.) to measure the amount of antifoam added and amount of solution to be defoamed. Insert “10” for 10% active, “30” for 30% active, etc. If you want to add 10 parts per million of active polydimethylsiloxane in 1,000 kg of foaming solution, you will have to add: • 0.01 kg of XIAMETER® ACP-1500 Antifoam Compound • 0.1 kg of XIAMETER® AFE-1510 Antifoam Emulsion • 0.05 kg of XIAMETER® AFE-1520 Antifoam Emulsion or XIAMETER® ACP-1920 Powdered Antifoam • 0.033 kg of XIAMETER® AFE-1530

Learn more For additional information regarding Dow Corning’s solutions for food and beverage processing, visit dowcorning.com/food. Contact information for a Dow Corning location near you can be found at dowcorning.com/ContactUs. Images: AV22376, AV22609 HANDLING PRECAUTIONS PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND MATERIAL SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD INFORMATION. THE MATERIAL SAFETY DATA SHEET IS AVAILABLE ON THE DOW CORNING WEBSITE AT DOWCORNING.COM, OR FROM YOUR...