Shanghai Xinya Purification Co. was originally part of the Shanghai Institute of Pharmaceutical Industry (SIPI) and became an independent enterprise after restructuring in 1989. As one of China's earliest microporous membrane manufacturers, we have 40+ years of dedicated R&D and production experience. Our product range covers MCE, CA, NC, NY, and PVDF membranes — pore sizes from 0.10 μm to 10 μm, serving life sciences, industrial purification, microbiology, cleanroom monitoring, biopharmaceuticals, and in vitro diagnostics (IVD).
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Quickly find the membrane matching your application. Cross-reference horizontally by pore range (0.1–10 μm) and vertically by hydrophilic/hydrophobic properties, chemical compatibility, and typical use cases.
| Membrane Material | Application Examples Application | Compatibility Compatibility | Hydrophilic Hydrophilic | Hydrophobic Hydrophobic |
Pore Size Range Pore Size Range (μm)
0.1 0.2 0.45 0.8 1.0 3.0 5.0 8.0 10
|
|---|---|---|---|---|---|
| Mixed Cellulose (MCE)MIXED CELLULOSE | General Filtration Microbiology Analysis Cleanliness Inspection |
Aqueous Solutions | ✓ | — | |
| Cellulose Acetate (CA)CELLULOSE ACETATE | General Filtration Microbiology Analysis Low Protein Binding |
Aqueous Solutions | ✓ | — | |
| Nylon (NY)NYLON · Organic | Sterile Filtration Gas Filtration HPLC Solutions |
Aqueous Solutions Organic Solutions |
✓ | — | |
| Hydrophilic PTFEHYDROPHILIC PTFE | HPLC Solutions Clarification / Sterile Aqueous-organic Mixtures |
Aqueous Solutions Organic Solutions |
✓ | — | |
| Hydrophobic PTFEHYDROPHOBIC PTFE | Gas Filtration Clarification / Sterile |
Non-aqueous Solutions | — | ✓ | |
| Polyethersulfone (PES)POLYETHERSULFONE | General Filtration HPLC Solutions Low Protein Binding |
Aqueous Solutions Organic Solutions |
✓ | — | |
| Nitrocellulose (NC)NITROCELLULOSE | Western Blot In Vitro Diagnostics General Filtration |
Aqueous Solutions | ✓ | — |
Based on your application and sample characteristics, follow the steps below to lock in the optimal membrane. For special process conditions, our engineers are available for 1:1 consultation.
Determine whether you're filtering gas or liquid; for liquids, further classify as aqueous, organic solvent, or strong acid/base.
Cross-reference with the compatibility table to verify the membrane will not be dissolved, swelled, or damaged by your medium.
Choose the largest pore size based on retention target (0.22 μm for sterilization, 0.45 μm for clarification, 5 μm for particles, etc.).
Verify temperature, pressure, and sterilization methods are within membrane operating range. Contact us for special requirements.
Before finalizing pore size, you must verify chemical compatibility between the membrane and your sample. This section provides two lookup tables: search by application for recommended membranes, or search by specific chemical.
| Category | Application | Recommended Membrane |
|---|---|---|
| Sol- vent / Liquid |
Aqueous solutions & water filtration | NC · Nylon · CA · MCE |
| Tissue culture media | Nylon · Hydrophilic PVDF · PES | |
| Pharmaceutical & beverage filtration | Nylon · PES | |
| General microbiology | NC · MCE | |
| Sterile reagent processing | Hydrophilic PVDF | |
| Water pollution index testing | MCE | |
| Pharma sterilization & particle analysis | MCE | |
| Pharma biological/serum filtration, IV solutions/antibiotic terminal filtration | PES | |
| General filtration · Low protein binding | CA · PVDF · PES | |
| Ultrapure water terminal filtration | PES | |
| Alcoholic solutions / mixtures / ion chromatography | CA · Nylon · PTFE · PES | |
| Sol- |
Non-polar (hydrophobic) | PTFE |
| Polar (hydrophilic) | Nylon · Hydrophilic PVDF | |
| Strong corrosive organic solvents | PTFE · PP | |
| Gas |
Air | PP · PTFE · MCE |
| Vacuum pump exhaust | Nylon | |
| Gas and vapor filtration | PVDF · PTFE | |
| High-temp liquid filtration | PVDF · PTFE | |
| Compressed air sterile filtration | PVDF · PTFE |
| Chemical | NC | CA | MCE | PP | Nylon | PTFE | PES | PVDF |
|---|
Full-range microporous membranes covering laboratory analysis, biopharma, and environmental monitoring. In-house factory with batch QC ensures consistency and reproducibility.
A blend of nitrocellulose and cellulose acetate fibers. High porosity provides excellent flow rate, Triton-free for high purity, autoclavable at 130°C. The standard membrane for general lab filtration.
Low static, high strength, low protein binding (26.8 vs MCE 100.8 μg/cm²). Improved gram-positive bacteria recovery — first choice for enzyme solution filtration, electrophoresis, and receptor research.
Inert to most aggressive solvents and strong acids/bases. Polypropylene single-side lamination enhances handling. High-strength choice for HPLC clarification and mixed-solution filtration.
Industry-leading product for gas sterilization and air filtration. Allows free gas passage while blocking aqueous liquids, protecting vacuum pumps and critical samples from liquid intrusion.
Naturally hydrophilic, no wetting agent needed. Binds protein, DNA, and RNA. Polyester-backed for durability and heat resistance; unbacked version offers faster flow. Economical choice for HPLC mobile phase filtration.
Outstanding low protein binding minimizes biological sample loss. Compatible with both aqueous and organic solutions — ideal for general filtration and HPLC sample handling.
蛋白结合的金标准选择。HPM® 系列覆盖 6 档爬速（65–200 s/40mm），Western Blot 与侧向流诊断（LFIA）双场景适配。低背景、高灵敏度、批间 CV<10%。
Pre-loaded with PES / PTFE / NY / MCE membranes, luer-lock fitting for direct syringe connection. Standard consumable for HPLC sample prep and small-volume sterile filtration.
SS316L medical-grade stainless steel, removable for membrane replacement, reusable. Heat- and autoclave-resistant. Used in routine lab filtration, biopharma process filtration, and microbiology platforms.
We support non-standard sizes, special pore sizes, custom packaging, and OEM/private label. Our R&D team provides tailored solutions for research institutions and biopharma companies.
From basic research to industrial-scale GMP pharma environments, Xinya membranes are deeply embedded in the daily workflows of thousands of labs worldwide.
We make membranes — so scientists can make discoveries.
Shanghai Xinya Purification Co. is located in Jiading, Shanghai. Since our founding in 1989, we have specialized in microporous membrane and filtration device R&D and manufacturing. From material formulations and phase separation processes to pore distribution control, 40+ years of expertise enable us to consistently deliver products meeting international laboratory standards.
Our customers include national key laboratories, leading universities, top-tier hospital research centers, biopharmaceutical companies, and environmental monitoring agencies. Their demanding standards are the minimum bar every Xinya membrane must meet.
All membranes are processed in our Class 100,000 cleanroom, minimizing environmental contamination and ensuring research-grade cleanliness.
Bubble point method (GB/T 32361-2015) + SEM dual QC. Tight pore size control ensures batch-consistent retention.
Every batch undergoes ICP-MS trace element analysis — from heavy metals to alkali metals — preventing ion contamination from disrupting downstream experiments.
From membrane selection consulting to application solutions to batch tracing, our technical team provides 5×8 response support.
Whether you need a product quote, custom inquiry, or technical support — our engineers will respond within 24 hours.
