Membrane Selection
How to Select PE, PS and DF Process Membranes
A practical selection framework for PE ultrafiltration, PS concentration nanofiltration and DF separation nanofiltration.
GUIDE
Read articleINSIGHTS & NEWS
Technical insights and company news
Selection guidance and process knowledge, followed by company events and notices.
Solvent-resistant NF
OS Solvent-resistant NF vs Aqueous Nanofiltration
A comparison of solvent-resistant and aqueous nanofiltration across compatibility, hardware and validation.
COMPARISON
Read articleAcid & Alkali-resistant NF
How to Select AS Acid-resistant and BS Alkali-resistant NF
A selection guide for AS and BS membranes under demanding acidic and alkaline process conditions.
SELECTION
Read articleMaterial Separation
Nanofiltration in Food and Bio-fermentation Separation
How nanofiltration supports desalination, decolorization, concentration and molecular fractionation in downstream processing.
FEATURE
Read articleAcid & Alkali Recovery
Acid- and Alkali-resistant NF for Process Liquor Recovery
Recovery and process reuse routes for acidic, caustic and high-pH process liquors.
FEATURE
Read articleSolvent-resistant NF
The Value of OSN in Pharmaceuticals and Fine Chemicals
OSN routes for concentration, impurity removal, solvent exchange, catalyst recovery and product purification.
FEATURE
Read articleFermentation Decolorization
Nanofiltration for Fermentation-feed Decolorization
A practical guide to NF decolorization mechanisms, process routes and downstream applications.
FEATURE
Read articleSupplier Selection
How to Evaluate a Nanofiltration Supplier
Supplier evaluation should cover real-feed testing, pilot work, cleaning recovery and engineering scale-up—not price alone.
GUIDE
Read articleLocal Service
Selecting a Nanofiltration Supplier in Zhejiang
A selection guide for Zhejiang and East China covering feed tests, scale-up, field service and system design.
GUIDE
Read articleEquipment Selection
Nanofiltration Equipment Suppliers vs. Membrane Suppliers
Membrane, equipment and process-solution suppliers answer different parts of an industrial separation project.
GUIDE
Read articleTechnology
Application Window of OS Solvent-resistant NF
Concentration, purification and valuable solvent recovery in pharmaceutical, coating and organic solvent systems.
TECH
Read articleProduct
How PS Nanofiltration Supports Bio-fermentation
Molecular-level separation, concentration and purification with lower energy demand and simplified operation.
TECH
Read articleR&D
From Bench Test to Engineering Scale-up
Building repeatable scale-up criteria around real feeds, membrane selection, cleaning strategy and operating flux.
R&D
Read articleSustainability
Returning Valuable Solvents to Production
Membrane separation reduces distillation load while recovering solvents and lowering material losses.
ESG
Read articleInsight
Membranes Reshape Fine-chemical Purification
Membrane processes add flexible options to conventional separation for heat-sensitive, valuable and complex feeds.
VIEW
Read articlePublic Notice
Environmental Impact Registration Notice for the DoisTec Laboratory Project
Published on 1 August 2026. Public notice of the environmental impact registration for the DoisTec laboratory project, including project information, pollution controls and key emission indicators.
FEATURE
Read articleCompany
Meet DoisTec at BIO CHINA 2026 in Hangzhou
From 21 to 23 September 2026, DoisTec will present ceramic, ultrafiltration and nanofiltration membranes together with pilot equipment at Booth D21, Hall 1D, Hangzhou International Expo Center.
EVENT
Read articleCompany
DoisTec at Jinan Bio-fermentation Expo
ORINS® membrane products and process solutions for bio-fermentation, food, pharmaceutical and chemical applications.
2026
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