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Hydranautics DairyRO and HYDRApolish

Superior concentration of high value products with blister free operation
Hydranautics’ 40+ years of manufacturing best high rejecting brackish water RO membranes is incorporated into making DairyRO and HYDRApolish elements.
DairyRO and HYDRApolish composite polyamide reverse osmosis elements are of net wrapped, full fit design, intended for daily CIP in the dairy environment. Hydranautics has set new industry standard by manufacturing robot-based automatic rolling machines, specially designed for fabricating membrane modules of the highest quality. The result is a high level of filtration and separations performance for our customers. Hydranautics’ auto-rolled DairyRO and HYDRApolish elements provide superior glue-line adhesion and strength, tighter rolling and caging, greater flow rates due to maximized effective membrane area and great structural reliability.
HYDRApolish is designed specifically for dairy process applications requiring continuous operation at high pressure, high temperature, or periodic heat sanitization at high temperature.
All DairyRO and HYDRApolish products are USDA accepted. Components conform to FDA regulation CFR Title 21, “3A Sanitary Standards for Crossflow Membrane Modules, Number 45-02”, EC Reg. No. 1935/2004, and EU Reg. No. 10/2011.
DairyRO applications
Pre-concentration of milk or whey for reducing product transport costs
Lactose Production  
Sweet/acid concentration
Concentration of UF permeate
Milk and juice concentration
HYDRApolish applications
RO permeate polishing
Condensate polishing
Pre-concentration of milk or whey for reducing product transport costs
Lactose Production  
Juice concentration  


Model Diameter, inches Length, inches Feed spacer, inches
DairyRO-3838-30 3.78 38 0.030
DairyRO-3838-46 3.78 38 0.046
DairyRO-3838-65 3.78 38 0.065
DairyRO-3840-30 3.78 38.75 0.030
DairyRO-3840-46 3.78 38.75 0.046
DairyRO-8038-30 7.90 38 0.030
DairyRO-8038-46 7.90 38 0.046
DairyRO-8038-65 7.90 38 0.065
DairyRO-8040-30 7.90 40 0.030
HYDRApolish 8 7.90 40 0.030


  • hydranautics-dairyro
  • hydranautics-hydrapolish-8