Product Information Product Name : ASO-500CManufacturer: Ecological Tanks, Inc.Original Certification Date: 06/01/2019Certification Date: 06/01/2019Certification End Date: 06/01/2026Capacity: 500Material: ConcreteType: Aerobic Treatment SystemClass: Class 1 Certifications Certification: Certifications: NSF/ANSI Standard 40 Standard year: 2023 Version Year of Original Standard: 2018SPE#: 340 Approved Approved Aerators: Manufacturer: HiblowModel: HP60Hi Blow model: XP-60/60A Manufacturer: HiblowModel: HP-60AHi Blow model: HP-60/60A Manufacturer: Jefe AireJefe Aire model: JA300 Manufacturer: Jefe AireJefe Aire model: JA-300AL Approved Diffusers: Manufacturer: Ecological Tanks, Inc.Model: Diff-C Approved Alarms: Manufacturer: Included on Aerator