Sartofluor®

Sartofluor^® filters deliver reliable sterile filtration performance across diverse biopharmaceutical applications through their hydrophobic 0.2 µm PTFE membrane technology. These filters provide comprehensive solutions for air, gas, and solvent filtration in bioreactors, storage tanks, freeze dryers, and autoclaves.

The product range encompasses multiple formats to meet varying process requirements: cartridges in 5", 10", 20", and 30" sizes, alongside Maxicaps®, Midicaps®, mini cartridges, junior filters, and capsules for specialized applications. Each format maintains the same validated performance standards while offering flexibility in filtration area and connectivity options.

Key Technical Specifications:

1. Membrane Material: Hydrophobic ePTFE providing high moisture repellence
2. Pore Size: 0.2 µm for reliable bacterial retention
3. Construction Materials: Polypropylene support fleece, core, and end caps; housing in Midicaps® and Capsules made of polypropylene
4. O-Ring Options: Cartridges, mini cartridges, and junior filters with silicone (optional EPDM or fluoroelastomer); Maxicaps®, Midicaps®, and Capsules with EPDM
5. Sterilization Capability: Autoclaving at 134 °C; in-line steam sterilization at 134 °C (cartridges and junior, 150 cycles; mini cartridges, 25 cycles; not applicable for Maxicaps®, Midicaps®, and Capsules)

The Sartofluor^® GA variant optimizes air and gas filtration for bioreactor venting, tank breathing, and freeze dryer applications. The LG variant specializes in solvent filtration for liquid processing applications, with filter area optimized for solvents. Both variants demonstrate retention of ≥10⁷ Brevundimonas diminuta/cm² (aerosol and liquid) and comply with USP Plastic Class VI standards; sterilizing-grade validation is performed according to ASTM F-838.

Manufacturing under ISO 9001 certified quality systems ensures consistent performance and regulatory compliance. Each filter undergoes 100% integrity testing (bubble point and diffusion) with clear identification marking for complete traceability. The robust construction enables minimum 25 sterilization cycles for autoclaving of cartridges (also Mini, Junior, Maxicaps®, Midicaps®) and 5 cycles for Capsules, and up to 150 in-line steam cycles for cartridges and junior (25 for mini cartridges), delivering cost-effective long-term performance.

Applications span the complete biopharmaceutical manufacturing process including bioreactor inlet and outlet filtration, storage tank venting, filling equipment protection, and autoclave venting systems. The hydrophobic membrane design maintains effective gas permeability while preventing moisture ingress, crucial for maintaining sterile conditions in critical process environments.

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