Dilution Solutions™ Ultrasonic Micro-Doser Kits 4in Kit w/ eOne MF 3005 The Ultrasonic Micro-Doser Hi-Flow kit gives you the capability to inject water treatment products, plant health additives, acids and bases. The system proportionally injects directly into the water line with flow rates up to 400gpm using an ultrasonic flow meter. Max injection rate 3.5oz/100gal.