Ecofilter Tek

Ecofilter Tek, based in Sherbrooke, Quebec, Canada (Pavilion 1, 3000 boul. de l'Université, J1K 0A5), develops proprietary Charge-Switching Technology — a surface chemistry platform where ion exchange resins and membrane polymer additives alter their electrical charge in response to pH changes, enabling contaminant capture and release without chemical solvents. The company's two commercial products are AmphoRes, a regenerable ion exchange resin that captures long- and short-chain PFAS down to below 0.2 ppt and regenerates using only water with NaOH (pH 11–12) — no salt, organic solvents, or methanol required — supporting up to six regeneration cycles; and AmphoPoly, an FDA-approved polymer additive blended into membrane dope solutions during fabrication to produce Charge-Switching Membranes with uniform pore size, higher flux, and reduced fouling. The technology specifically targets hydrophilic foulants, which the company identifies as more challenging than hydrophobic ones due to their variable charge across different environments. Ecofilter Tek serves wastewater treatment (particularly PFAS removal), dairy processing (protein filtration and membrane fouling reduction), wine, agriculture, medical, oil and gas, and automotive markets. The company collaborates with New Leaf on smart polymer development.