Overview
Double-pass anti-static filter cartridges combine advanced filtration mechanics with electrostatic discharge (ESD) protection. Their unique dual-flow configuration forces media through two distinct filtration stages, improving particulate capture rates compared to single-pass designs. The integrated anti-static properties are achieved through conductive materials or coatings that safely dissipate charges, making them ideal for flammable environments or sensitive electronic components. These cartridges comply with ISO 16392 and other industrial ESD standards. They are typically constructed with pleated polypropylene membranes or sintered metal fibers, offering micron ratings from 0.1 to 100 μm. The design minimizes pressure drop while maximizing service life in continuous industrial operations.
Structure and Working Principle
The cartridge's double-pass architecture features an inner core for primary filtration and an outer layer for secondary polishing. Contaminants are first trapped in the high-capacity outer pleats, while finer particles are captured during the reverse flow through the inner matrix. This staged approach reduces clogging and extends maintenance intervals. Anti-static functionality is engineered via carbon-infused polymers or metal-embedded fibers that create a continuous conductive path. When grounded, this safely channels static electricity away from filtered media. Some models incorporate ionization strips to neutralize charges in gas streams. The end caps are often made of conductive polycarbonate or stainless steel to maintain the discharge circuit.
Key Features
1. **Dual-Flow Efficiency**: Achieves 30–50% higher particulate retention than single-pass designs by forcing media through two filtration stages. 2. **Static Dissipation**: Surface resistivity typically measures 10^3–10^6 Ω/sq, effectively preventing spark risks in solvent or powder applications. 3. **Material Versatility**: Available in melt-blown PP, PTFE-coated, or 316L stainless steel constructions for chemical compatibility. 4. **Validated Performance**: Most units undergo ASTM F312 (filtration) and IEC 61340-5-1 (ESD) testing. High-end models may include integrity-testable designs for pharmaceutical use or CIP/SIP capabilities for sterile processes. Temperature tolerance ranges from -40°C to 130°C depending on materials.
Application Areas
**Electronics Manufacturing**: Critical for wafer fabrication cleanrooms where static attracts contaminants. Used in ultrapure water (UPW) systems and photoresist filtration. **Chemical Processing**: Filters solvents, acids, and monomers while preventing ignition hazards. Common in polyester production and paint pigment lines. **Pharmaceuticals**: Protects bioreactors and filling lines from both particulates and static-induced microbial adhesion. Validatable for FDA-regulated processes. Other uses include aviation fuel polishing, lithium battery electrolyte filtration, and compressed air systems for powder coating operations. Their conductivity makes them unsuitable for insulating fluid applications like transformer oil.
Maintenance and Precautions
Regular inspection intervals should align with the manufacturer's recommended service life—typically 3–12 months depending on contaminant load. Always verify the cartridge's grounding connection before system startup using a megohmmeter (target resistance <1×10^8 Ω). For cleaning, use only approved methods: ultrasonic baths for metal cartridges or low-pressure backflushing for pleated designs. Never autoclave non-metallic units unless specified. Storage should be in anti-static bags with humidity control to prevent material degradation. Warning signs include increased differential pressure (>10% above baseline), visible filter media damage, or erratic static discharge readings. Always replace O-rings when installing new cartridges to maintain proper grounding.
B2B Procurement Guide
When sourcing these cartridges, prioritize suppliers with ISO 9001/14001 certifications and request material certifications (e.g., RoHS, REACH). Key specifications to confirm: 1. **Filtration Rating**: Absolute vs. nominal micron size; match to your critical particle size 2. **Flow Rate Compatibility**: Ensure the cartridge's L/min rating meets system requirements 3. **Conductivity Documentation**: Request surface/volume resistivity test reports 4. **Chemical Compatibility Charts**: Especially for aggressive media like DMAc or HF Bulk orders (100+ units) often qualify for 15–30% discounts. Consider total cost of ownership—higher-priced cartridges with longer lifespans may reduce changeout labor costs. Leading manufacturers include Pall, Sartorius, and Eaton Filtration.
Related Manufacturers
- 主营：全焊式条缝滤芯、排支管、编织过滤筛管、梯形丝石油筛管
- 主营：ePTFE过滤膜、ePTFE滤材、聚四氟乙烯薄膜、折叠滤芯用膜、双向拉伸膜、特氟龙薄膜、防水透气膜、空气净化滤材、口罩滤材、工业除尘滤材、服装膜、HEPA滤纸、液体过滤膜、堆肥膜、膨体聚四氟乙烯、除菌过滤膜、吸尘器滤材、无纺布、洁净室过滤材料、无尘拖链膜、电缆膜、ePTFE微孔膜、防水透声膜、质子交换膜、MBR平板膜
- 主营：脉冲褶、abs塑料、过滤桶、筒滤芯、滤芯环保、水泥粉、除尘褶、除尘器、喷涂房、替代袋、滤筒袋、ptfe滤筒、ptee滤筒、过滤除尘、滤筒除尘、空气除尘、卡盘滤筒、除尘设备、过滤滤筒、环保二十、滤筒空气、过滤空气、环保粉尘、过滤螺纹、塑料快拆
- 主营：除尘滤芯、粉末滤芯、空气滤筒、阻燃滤筒、钢厂滤筒
- 主营：液压油滤油机、送风机、液压油过滤器、贺德克滤芯、力士乐滤芯、油滤芯、液压油滤芯、抗燃油滤芯、水滤芯、精滤芯、cst滤芯、不锈钢滤芯、冲洗滤芯、电厂滤芯、主压滤芯、东汽滤芯、磨煤机油滤芯、高压滤芯、折叠滤芯、汽轮机滤芯、除尘滤芯、黎明滤芯、风电齿轮滤芯、润滑油滤芯、液压过滤
- 主营：自洁式空气过滤器、滤筒除尘器、空气滤筒、除尘滤芯、压缩空气精密过滤器、浅层砂过滤器、多介质过滤器、自清洗过滤器、纤维球过滤器、陶氏反渗透膜、反渗透设备、袋式过滤器、精密排渣过滤器、软化水设备、高精度滤油机、国产颇尔滤油机
- 主营：空气滤筒、纳米阻燃除尘滤筒、除尘滤筒、阻燃覆膜除尘滤芯、覆膜滤芯、阻燃滤芯、防静电滤芯、聚酯纤维滤芯、自洁式空气过滤器滤芯、日本东丽除尘滤筒、自洁式空气过滤器滤筒
- 主营：过滤器、除尘滤筒、除尘器滤筒、滤芯油、滤芯滤筒、空气滤芯、液压滤芯、粉尘滤芯、除尘滤芯、滤芯滤清器、滤芯润滑油、滤芯液压油、滤芯粉尘滤筒、扫地车除尘、粉末回收粉尘、耐高温除尘器、工业粉尘回收、聚酯纤维除尘
- 主营：油分芯、空气过滤、空压机机油、折叠滤芯、精密滤芯、空压机滤芯、液压站滤芯、工业除尘滤芯、粉尘滤筒除尘器
- 主营：自洁式空气过滤器、自清洗过滤器、滤筒除尘器、大流量水滤芯、折叠滤芯、保安过滤器、滤油机、多介质过滤器、浅层砂过滤器、精密过滤器、大流量保安过滤器、袋式除尘器、脉冲除尘器、空气滤筒、反渗透设备、空气过滤器、超滤设备、软化水设备、滤元、焊烟净化器、反冲洗过滤器、刷式自清洗过滤器、袋式过滤器、聚结分离滤油机、移动式滤油机
- 主营：除尘机、过滤筒、顶除尘、双滤筒、方盖滤芯、工业滤芯、叉车滤芯、滤芯滤筒、除尘滤芯、空气滤芯、打磨滤芯、粉尘滤芯、精密滤芯、阻燃滤芯、除尘车滤芯、除尘器、空压机、快拆卡盘、滤筒除尘、除尘设备、过滤滤筒、覆膜滤筒、叉车柴油、方盖卡片、环保滤筒
- 主营：滤清器、过滤设备、过滤器、除尘滤芯、液压滤芯、除尘器、除尘滤筒、液压设备
- 主营：液压过滤器滤、精密过滤器、过滤器、粉尘滤芯、滤芯过滤器、液压站滤芯、工业除尘滤芯、覆膜除尘滤芯、水泥厂滤芯、天然气滤芯、工程机械滤芯、风电滤芯、法兰式滤芯、液压回油滤芯、黎明液压滤芯、防静电滤筒、pp滤芯、曼牌空气滤芯、抛丸机滤芯、贺德克液压滤芯、搅拌站除尘滤芯、仓顶除尘滤芯、矿山滤芯、除尘滤筒、机油滤清器
- 主营：净化器滤芯、增压器滤芯、粉尘过滤芯、除尘滤筒、钢厂粉尘滤筒
- 主营：cu250p25a、cu025a10a、0240d020p、除尘滤芯、smc滤芯、液压油滤芯、油滤芯、0160r003p、0240d025w、cu040a10a、1300r005p、cu040a25a、cu630a10a、cu250a10a、cu850a16a、cu100m25n、滤油机、0660r003p、0240d050w、cu250m25n、cu630p25a、2600r050w、cu250m60n、0660r020p、0850r020p
- 主营：液压油滤芯、风电齿轮箱滤芯、过滤器滤芯、钢厂液压站油滤芯、电厂液压油滤芯、不锈钢滤芯、工程机械滤芯、润滑油滤芯、煤矿液压泵站滤芯、盾构机滤芯、发电厂汽轮机滤芯、精密滤芯、船舶设备液压滤芯、风电滤芯、聚结滤芯、滤芯、矿山机械设备滤芯、双筒过滤器滤芯、自洁式空气滤芯、锅炉磨煤机过滤器滤芯、三一重工液压油滤芯、徐工挖掘机滤芯、除尘滤筒、滤清器、矿山机械润滑油滤清器
- 主营：空气滤筒、除尘滤筒、五耳除尘滤筒、空气滤芯、除尘滤芯、空气净化滤芯、cnc油雾滤芯、六耳除尘滤芯、不锈钢除尘滤芯、三耳除尘滤芯、方框油雾滤芯、四耳除尘滤芯、花板孔除尘滤芯、阻燃滤芯、花板开孔滤筒