01POLYMERIC MEMBRANES
Polymeric membranes
Ultrafiltration, nanofiltration, reverse osmosis and solvent-resistant nanofiltration for separation, concentration and purification.
Explore seriesORINS® MEMBRANES · DOISTEC ENGINEERING
Membranes & filtration systems for process separation.
Polymeric and ceramic membranes, lab and pilot equipment, and application support for purification, concentration and recovery.
PRODUCTS
Membranes and equipment
01
02CERAMIC MEMBRANES
Ceramic membranes
Ceramic membranes for elevated temperatures, intensive chemical cleaning and demanding process media.
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03LABORATORY & PILOT
Lab & pilot systems
Equipment for membrane evaluation, bench testing and process development before engineering scale-up.
Explore seriesAPPLICATIONS
Start with your separation goal
Process concentration
Explore nanofiltration for polyol and amino acid concentration, with project examples from pharmaceutical and biotechnology production.
Explore applicationSeparation & desalination
Explore PE ultrafiltration for peptide concentration, desalination and macromolecule retention. Select the membrane grade through actual feed testing.
Explore applicationSolvent-based processing
Explore the OS solvent-resistant nanofiltration series and solvent-resistant pilot equipment for solvent separation and recovery studies.
Explore applicationPROJECT EXPERIENCE
Membrane concentration in practice
01NF Concentration
Polyol Concentration Systems for a Jiangxi Pharmaceutical Company
Six NF concentration systems: two each at 9T/H, 3T/H and 4.5T/H.
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02NF Concentration
Polyol Concentration Systems for a Zhejiang Pharmaceutical Company
A portfolio of NF concentration systems ranging from 2T/H to 20T/H.
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03Bio-manufacturing
Amino Acid Concentration System for an Anhui Biotech Company
A 240T/D primary NF stage followed by a 120T/D secondary NF concentration stage.
View projectTESTING & SCALE-UP
Connect membrane selection to process data
- 01
Define the process
Describe your feed, target components, capacity and separation objective.
- 02
Evaluate membrane options
Discuss suitable membrane families and a bench or pilot evaluation route.
- 03
Review the test results
Assess rejection, flux, pressure drop, fouling and cleaning recovery.
- 04
Plan the next scale
Use validated process data to discuss system configuration and engineering requirements.
TECHNICAL RESOURCES
Information for your next decision
SELECTION GUIDE
PE, PS or DF?
Start with the separation objective, then compare membrane families.
Read the selection guidePRODUCT DATA
PE ultrafiltration specifications
Compare PE1–PE4 membrane material, MWCO, active area and feed spacer.
View specificationsTECHNICAL FAQ
Preparing for membrane selection
Understand the feed information and validation needed for your project.
Read common questionsABOUT DOISTEC
Membrane expertise.
From materials to engineering.
Zhejiang DoisTec Technology Co., Ltd., based in Hangzhou, China, connects material research, application development, membrane manufacturing and engineering delivery.
About our company