Hydranautics ESPA4 (Energy-Saving Polyamide) RO membranes continue to meet the ever-increasing demands of the water treatment industry. Hydranautics' ESPA4 low energy membrane delivers even greater productivity and rejection, now at operating pressures of less than 100 psi.
Users worldwide have made ESPA their first choice For high productivity and salt rejection. ESPA4 membranes have long been the industry leaders, with the highest productivity and rejection available, producing up to 14,000 GPD. Enjoy up to 250% greater productivity per membrane area compared with conventional polyamide membranes, at the lowest cost per gallon produced.
ESPA4MAX