The main body of the product consists of a filter membrane, a housing, and connecting connectors. The filter membrane is made of hydrophilic or hydrophobic PTFE material, manufactured using advanced technology to create a uniform microporous structure, achieving precise filtration based on size exclusion. The housing is made of low-leaching high-density polyethylene (HDPE) or polypropylene (PP), possessing excellent pressure resistance and chemical compatibility, preventing secondary contamination during filtration. The connectors use a standard Luer-Lok® female connector and a Luer Slip™ male connector design, allowing for quick adaptation to various syringes and ensuring a tight, leak-free connection.
During operation, the sample to be filtered is injected into the syringe and connected to the filter. Manual pushing or slight pressure is applied to allow the sample to flow through the PTFE filter membrane. The membrane traps particles, impurities, and microorganisms larger than the pore size, allowing only the target filtrate to pass through, thereby achieving sample clarification, purification, or sterilization, while protecting downstream precision instruments such as chromatographic columns and detectors from clogging and damage.
Product Advantages
- Excellent Chemical Compatibility: PTFE filter membranes possess superior corrosion resistance, tolerating various organic solvents, strong acids, strong alkalis, and strong oxidizing reagents. There is no risk of membrane degradation or impurity leaching, making them suitable for filtering complex matrix samples, especially ideal for sensitive analytical scenarios such as ion chromatography (IC) and high-performance liquid chromatography (HPLC).
- Low Dissolution and Low Binding Characteristics: The filter membrane and shell undergo rigorous process control, resulting in extremely low ion dissolution levels (e.g., Cl⁻, NO₃⁻, and SO₄²⁻ dissolution amounts are all <0.5µg/mL). Furthermore, they exhibit weak adsorption of sample components, effectively preventing the loss of target substances and ensuring the accuracy of analytical results.
- Precise Pore Size and Flexible Specifications: Standard pore sizes of 0.20µm and 0.45µm are available, with 0.20µm suitable for sterile filtration and 0.45µm for general particulate removal. Diameters include 13mm and 25mm models, suitable for sample volumes of 1-10mL and 10-100mL respectively, meeting diverse experimental needs.
- High Efficiency and Stable Performance: Each batch undergoes bubble point, flow rate, pressure, and particulate level testing to ensure consistent filtration. Maximum inlet pressure reaches 7 bar (100psi), maximum operating temperature is 45℃, and flow performance is excellent (at 25℃ and 2 bar pressure, the 25mm model achieves a flow rate of up to 90mL/min).
- Convenient and Safe Design: Single-use design avoids cross-contamination; individual packaging minimizes the risk of foreign ion contamination. Some models feature color-coded printing for quick identification of pore size and filter type, ensuring efficient and convenient operation.
PTFE syringe filter manufacturer
Hanzhikang Filtration Equipment Co., Ltd. is a technology-based manufacturing enterprise specializing in fluid purification and separation. It integrates the R&D, production, sales, and import/export trade of filtration equipment and consumables, providing a full range of filtration solutions and customized services for the pharmaceutical, chemical, electronics, and environmental protection industries.
The company has its own R&D and production base, focusing on core products such as stainless steel filters, PTFE/PFA precision filters, sterile capsule filter elements, and industrial pre-filtration equipment. With high filtration accuracy, excellent chemical compatibility, and stable product performance, it meets the diverse needs of various industries for high-purity fluid processing, sterile filtration, and industrial purification, and possesses full-process ODM/OEM service capabilities.
Adhering to the business philosophy of "quality first, customer foremost," Hanzhikang strictly controls quality and deeply cultivates technological innovation. Its products are sold globally, and with professional solutions, flexible customization capabilities, and a comprehensive after-sales system, it has become a trusted filtration equipment partner for customers both domestically and internationally.
FAQ
What are the common pore sizes for PTFE syringe filters, and what are their respective applications?
The mainstream sizes are 0.20μm and 0.45μm. 0.20μm is used for sterile filtration (such as pharmaceutical reagents, culture media, and sterile test samples), effectively trapping bacteria and other microorganisms. 0.45μm is used for routine clarification filtration (such as HPLC/IC sample pretreatment, removing suspended particles from samples), protecting downstream precision instruments.
Does every batch of PTFE syringe filters undergo quality testing, and are there test reports?
Each batch of products undergoes bubble point testing, flow rate testing, pressure testing, and particle level testing to ensure that filtration accuracy, flow rate, and pressure resistance meet standards. Corresponding quality inspection reports (COAs) can be provided according to customer requirements.
What is the delivery cycle for wholesale orders? Do you support expedited shipping?
Regular wholesale orders are shipped within 5-7 business days after payment, with multiple warehouses nationwide for inventory. For urgent orders ≤ 10,000 units, expedited shipping within 3-5 business days is available; shipping costs are negotiable based on requirements.
Hot Tags: ptfe syringe filter, China ptfe syringe filter manufacturers, suppliers, factory