Limitation of Liability: SSI is an ISO 9001:2015 Quality Certified company manufacturing diffused aeration systems for municipal and industrial applications for over twenty years. This chat bot is a computerized system designed to answer questions related to wastewater aeration and MBBR systems, and to guide users through the SSI web site. Any recommendations are based on generally available formulas and SSI's extensive experience providing aeration systems to municipal and industrial clients. It is possible for a chat bot to misunderstand a question or to give a misleading response, even when that is not our intention. Consult factory if you have any questions or if you would like help from a live expert. Thank you for visiting.