Professional syringe filters are precision filtration devices used to remove particulates from liquid samples before analytical testing or laboratory processes. These filters are essential components in sample preparation workflows such as high performance liquid chromatography (HPLC), gas chromatography (GC), pharmaceutical analysis, biotechnology assays, environmental water testing, and clinical diagnostics. Unlike standard membrane filters, syringe filters are single-use devices designed for rapid filtration of small sample volumes, typically ranging from 0.2 mL to 100 mL per syringe operation.
Syringe filters consist of a plastic housing and a membrane filter medium that traps particles while allowing the liquid to pass through. Common membrane materials include PTFE (polytetrafluoroethylene) for aggressive solvent compatibility, Nylon (polyamide) for general aqueous sample filtration, PVDF (polyvinylidene fluoride) for low extractables and protein sample filtration, PTFE/PES blends for mixed solvent systems, and cellulose acetate for low protein binding in biochemical applications. Filter pore sizes are selected based on the analytical requirement, with 0.2 µm, 0.45 µm, and 1.0 µm being typical grades in laboratory settings.
Selecting a syringe filter supplier requires careful evaluation of membrane material compatibility, pore size distribution, housing material strength, chemical resistance parameters, sterilization methods, and batch consistency. For analytical laboratories and regulated environments, compliance with quality inspection procedures, traceability documentation, and production capacity for consistent supply are critical factors.
This article introduces ten professional syringe filter suppliers in China for 2026 and includes a detailed overview of syringe filter types, material selection, sample preparation workflows, and supplier capabilities.
Hangzhou Hanzhikang Purification Equipment
Hangzhou Hanzhikang Purification Equipment Co., Ltd. is a manufacturer specializing in laboratory filtration and purification products. The company's professional syringe filter product line includes a range of membrane media, filter housings, and packaging formats designed for specific analytical and scientific workflows.
The syringe filter housing assemblies are manufactured from medical grade polypropylene (PP) with design parameters to withstand typical laboratory pressures during manual syringe operation. Membrane materials offered include PTFE, Nylon (PA66), PVDF, PES (polyethersulfone) and cellulose acetate, with pore size options of 0.2 µm, 0.45 µm, and 1.0 µm. Chemical compatibility charts are provided to match membrane choices to solvent systems such as acetonitrile, methanol, DMSO, and aqueous buffers used in HPLC and GC sample preparation.
The company supports multiple packaging formats including:
Sterile individually wrapped units for GMP and clinical labs
Bulk packaging for high-throughput analytical workflows
Rack trays for laboratory automation systems
Barcode labeled assemblies for inventory control
Hangzhou Hanzhikang's syringe filters are used in experimental procedures such as solvent degassing for HPLC analysis, protein sample clarification in biotechnology assays, environmental water analysis for particulate contaminants, and preparative filtration prior to mass spectrometry. The company follows documented in-process inspection procedures including membrane integrity tests, bubble point measurements, and visual inspections to ensure consistent pore size distribution and fluid flow rates.
Custom services include:
OEM/ODM syringe filters with customer-specific membrane and housing combinations
Printed or laser-etched company logos on housings
Custom packaging designs with lot traceability and barcodes
Technical consultation on membrane selection for specific assay requirements
The company's product support team assists clients with lab protocol integration, sample throughput optimization, and tolerance specification documentation, helping research institutions and quality control laboratories streamline their filtration workflows.
Jiangsu Ftth
Jiangsu Ftth produces professional syringe filter assemblies with standard membrane materials such as Nylon and PTFE. Its syringe filters are designed for solvent and aqueous sample clarification prior to analytical testing. Typical membrane pore sizes offered include 0.2 µm and 0.45 µm, suitable for HPLC and GC workflows as well as environmental sample testing. Packaging formats include individual sterile pouches and bulk sterile trays for high throughput laboratory use.
Zhejiang Qdu
Zhejiang Qdu supplies nylon and PVDF membrane syringe filters used in biotechnology sample preparation, vaccine formulation testing, and clinical assay pre‑filtration. Membranes are selected for chemical compatibility with common buffers and saline solutions. Pore sizes offered include 0.2 µm, 0.45 µm, and 1.0 µm. Housing materials are polypropylene designed for manual syringe interface and automated dispensing systems.
Shanghai Clflw
Shanghai Clflw manufactures syringe filters with PTFE membranes for aggressive solvent systems such as methylene chloride, THF, and HPLC mobile phases. The polypropylene housing is specified with chemical resistance parameters to withstand laboratory solvent contact. Typical applications include solvent degassing before chromatography and trapped precipitate removal in sample preparation.
Wenzhou Filk
Wenzhou Filk supplies syringe filters with PES and Nylon membranes intended for aqueous sample filtration prior to biochemical assays and environmental contaminant analysis. PES membranes are selected for low protein binding when filtering biological fluids. Pore sizes 0.2 µm and 0.45 µm are commonly stocked. Packaging options include sterile foil pouches and tray formats.
Nanjing Puli
Nanjing Puli offers syringe filters with mixed PVDF/PTFE blends designed for mixed solvent systems used in drug development laboratories. Housing materials are medical grade polypropylene. Membrane compatibility parameters are documented for organic and aqueous mixtures used in analytical sample preparation protocols.
Guangzhou ATh
Guangzhou ATh supplies syringe filters with cellulose acetate membranes with low protein binding, suitable for filtration prior to enzyme assays, immunoassays, and clinical diagnostic testing workflows. Pore size options include 0.2 µm and 0.45 µm with chemical compatibility charts provided for aqueous buffers and biological reagent systems.
Kunshan EP
Kunshan EP produces syringe filters with PTFE and Nylon membranes supplied in sterile packaging for laboratory quality control, QA/QC filtration of process samples, and chromatography sample cleanup. Housing materials are polypropylene with dimensions compatible with 1 mL to 50 mL syringes used in analytical labs.
Tianjin EFi
Tianjin EFi supplies nylon, PVDF, and PTFE syringe filters packaged for research laboratories, environmental testing facilities, and pharmaceutical quality control. Sterilization options include gamma irradiation and autoclave validation for laboratory quality assurance.
Shandong ClFw
Shandong ClFw manufactures syringe filters with membrane combinations designed for microbiological sample preparation and particle removal prior to analytical testing. Membrane materials include PES, nylon, and cellulose acetate with documented flow rate parameters under typical laboratory pressure.
Understanding Professional Syringe Filters
Professional syringe filters help laboratories remove particulates from liquid samples before analytical instrumentation such as HPLC, GC‑MS, ICP‑MS, UV‑Vis spectrophotometers, and amino acid analyzers. The selection of membrane material and pore size represents a critical step in sample preparation workflows:
PTFE membranes offer chemical resistance for aggressive solvents
Nylon membranes provide broad compatibility with aqueous buffers
PVDF supports low extractables for protein sample filtration
Cellulose acetate minimizes protein binding in biological assays
Pore sizes such as 0.2 µm are typically selected when fine particle removal is required for high‑resolution chromatography, while 0.45 µm is often used for general sample clarification. Flow rate parameters and bubble point tests are conducted to ensure membrane integrity and consistent filtration performance.
When choosing a syringe filter supplier, buyers should verify:
Membrane material compatibility with planned solvents and buffers
Pore size distribution and rated flux
Housing material strength and chemical resistance
Sterilization method and packaging format
Production capacity and traceability documentation
FAQ
Q: What membrane materials are available for syringe filters?
A: PTFE, Nylon (PA66), PVDF, PES, and cellulose acetate-selected based on chemical compatibility and protein binding requirements.
Q: What pore sizes are common?
A:0.2 µm, 0.45 µm, and 1.0 µm depending on sample particle size and analytical method.
Q: Can syringe filters be sterilized?
A: Yes; options include gamma irradiation and autoclave validation depending on laboratory protocols.FAQ