Product Information Product Name : EC 500 MSManufacturer: Acquired Wastewater Technologies, LLCOriginal Certification Date: 11/10/2017Certification Date: 11/10/2017Certification End Date: 11/10/2024Capacity: 500Material: ConcreteType: Aerobic Treatment SystemClass: Class 1 Certifications Certification: Certifications: NSF/ANSI Standard 40 Standard year: 2023 Version Year of Original Standard: 2013SPE#: 294 Approved Approved Aerators: Manufacturer: GastModel: 40Gast model: SPP-40GJL Manufacturer: GastGast model: DBP-40 Manufacturer: GastGast model: DDL(101)-40 Manufacturer: GastGast model: DBM(101)-40 Manufacturer: GastGast model: DBM(175)-40 Manufacturer: HiblowHi Blow model: HP-40-0110 Manufacturer: HiblowHi Blow model: HP-40-010A Manufacturer: HiblowHi Blow model: HP-60-0110 Manufacturer: HiblowHi Blow model: HP-60-010A Manufacturer: SecohSecoh model: SLL-40 Manufacturer: SecohSecoh model: SLL-40-AL Manufacturer: SecohSecoh model: SLL-50 Manufacturer: SecohSecoh model: SSL-50-AL Manufacturer: ThomasThomas model: 5040 Manufacturer: ThomasThomas model: 40A Manufacturer: MedoMedo model: 45B Approved Diffusers: Manufacturer: Custom Approved Alarms: Manufacturer: Thomas