IWA test report: AQUALOOP, Rainwater treatment demonstration plant Kelmis (German)PIA Performance Results: AQUALOOP-System 6Fraunhofer ISI: Ecological evaluation of the AQUALOOP systemPURAIN: Filter comparison testPURAIN test results: 150 to 400SVGW Certificate of conformity: RAINMASTER series & SEPAMATDVGW Certificate of conformity: RAINMASTER series & SEPAMATBELGAQUA certificate: RAINMASTER & SEPAMATKIWA Certificate: RAINMASTER & SEPAMAT (Valid only if check valve type EA is connected.)