The 1AF90T is the only certified UV system available in the market that is approved for a water quality down to a UV transmittance[100mm] of 5% according to SVGW/ÖVGW/DVGW and offers outstanding performance in this area. Just like the 1AF45T, also the 1AF90T is suitable for continuous operation. Across the entire transmittance range, the 1AF90T is 25% more efficient than comparable systems available in the market.