Hydranautics membranes // Dear Customers, if you need advice on choosing a suitable membranes, product comparison or membrane design, please feel free to contact us via e-mail sales@dcsolutions.cz.

Superior concentration of high value products with blister free operation

DairyRO Series

Hydranautics’ 40+ years of manufacturing best high rejecting brackish water RO membranes is incorporated into making DairyRO elements.

DairyRO 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 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.

All DairyRO products are USDA accepted. Components conform to FDA regulation CFR Title 21 and “3A Sanitary Standards for Cross flow Membrane Modules, Number 45-01, Section C”.


Pre-concentration of milk or whey for reducing product transport costs

Lactose Production

Sweet/acid concentration

Concentration of UF permeate

Milk and juice concentration



Robust microfiltration membranes for the most difficult applications


Our polysulphone MF membrane with a 300K MWCO provides high flow and rejection with excellent tensile strength. These are constructed sanitary style with a polypropylene net wrap and its 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.


Clarification application in the sugar industry

Clarification of enzyme streams, fruit and vegetable, juices, wine etc.


Membrane Solutions for the pharmaceutical industry

SanRO® and SanRO® HS elements are USP compliant and typically used in producing purified water in the pharmaceutical, medical, biotechnology, food, beverage and semiconductor processes. Elements meet all requirements for purified water and confirm to FDA Regulation CFR, Title 21.

SanRO® and SanRO® HS elements feature a net-type outer wrapping that allow easy access for cleaning in place with specially selected components for durability in daily sanitization. These energy saving highly permeable, high rejection membranes provide high flux and low-energy costs. All elements are heat-set at the factory for predictable flows at the outset of installation.


Reduction of bacterial endotoxins and microbes

Opthalmic and inhalation product production

Reduction of TDS, TOC and colloids from high purity water

Removal of algae, fungi, mold, yeast and bacteria as measured in “colony forming units “(CFU)

Removal of bacteria from cell walls of polysaccharide compounds

Reduction of microbial growth by minimizing nutrients

Electronics-grade ultrapure water

Water for cosmetic production

Nutriceutical production

Food and beverage production

Container rinsing

Production of ultrapure or PW (Purified Water)

Wine de-alcoholization

Replacement of distillation systems, providing lower energy usage and costs

Product Offerings:

SanRO®: Membranes for high-performance USP water purification systems used at operating temperatures up to 45°C.

SanRO®-HS: A heat sanitizable version sanitizable at 85°C.

SanRO®-HS2: A higher fluxing version of HS with slightly less rejection.

All SanRO®s are available in diameters of 4.0 and 8.0 inches.


Specialized membranes for the most difficult and challenging feed streams

The HYDRApro® series is a unique set of spiral wound membranes customized specifically for industrial process applications. These membranes are based on existing Hydranautics high-performance membrane products which have been specially designed to treat a variety of challenging industrial feed streams including high fouling, high temperature, or chemically aggressive feeds.

All HYDRApro® products are available in 4040 and 8040 sizes.


Reclamation Of Hot Process Water

Condensate Recycle

Color Removal In Sugar Processing

Chemicals Recovery

High Temperature Produced Water Recycle

Softening Of Concentrated Brine Solutions

Laundry Wastewater Recycle

Textile Wastewater Recycle

Recovery Of Proteins & Bio-Compounds

The 500 series offers membrane elements used in the light process industry such as textile and laundry to reclaim laundry waste water etc.



Hydranautics’ membrane technology experience and innovation are at the core of every DairyNF™ series membrane. Specifically designed for the separation of divalent anions and/or organic molecules greater 200 Daltons from monovalent salts and lower molecular weight organics, DairyNF™ membranes deliver exceptional performance and value.