Strainrite
Sterilizing-grade membrane cartridges, hydrophobic vent filters, and single-use filter capsules — a Maine-based filtration manufacturer sourced by LibertyCES through its regional distribution relationship with Allied Fluid Products.
Strainrite, established in 1978 in Auburn, Maine, makes liquid filtration products for biopharmaceutical, food and beverage, chemical processing, and water treatment. Key lines are Pur-MAXX SG 0.2 micron PES sterilizing-grade cartridges, Vent-MAXX hydrophobic PTFE vent filters, Endo-MAXX CN charged nylon for endotoxin removal, and MAXX-Cap polypropylene capsules from 2 to 40 inch.
What LibertyCES sources from Strainrite
Strainrite, established in 1978 and headquartered in Auburn, Maine, manufactures liquid filtration products — filter bags, membrane and depth cartridges, and single-use filter capsules — for biopharmaceutical, food & beverage, chemical processing, and water treatment applications. LibertyCES sources Strainrite's filtration line through its regional distribution relationship with Allied Fluid Products, not as a direct Strainrite-authorized distributor.
Sterilizing-grade membrane filter cartridge for liquid sterilization in biopharmaceutical and food/beverage applications.
Hydrophobic PTFE membrane filter built for tank vent and gas filtration service.
Charged nylon membrane filter for endotoxin removal.
Ultrapure polypropylene filter capsule for full-scale single-use filtration.
Strainrite — Real Catalog Spec Data
| Product Line | Model | Category | Material | Size / Capacity | Temp Rating |
|---|---|---|---|---|---|
| Pur-MAXX SG / Mem-Pleat SG | Sterilizing Grade Membrane Filter | Filter Cartridge | PES membrane | 0.2 micron | - |
| Vent-MAXX | Hydrophobic PTFE Membrane Filter | Filter Cartridge | double-layer PTFE | - | - |
| Endo-MAXX CN | Charged Nylon Membrane Filter | Filter Cartridge | charged nylon | 0.2 micron | - |
| MAXX-Cap / Brevi-Cap | Filter Capsule | Filter Cartridge | ultrapure polypropylene | 2"-40"; 0.2/0.1 micron | - |
Sourced from Allied Fluid Products' line-card documentation for Strainrite.
Frequently Asked Questions
What micron rating do I need for sterilizing-grade filtration?
Strainrite's Pur-MAXX SG / Mem-Pleat SG line is built around a 0.2 micron PES membrane — the standard absolute rating used across the industry for sterilizing-grade liquid filtration in biopharmaceutical and food/beverage applications.
What's the difference between the Pur-MAXX SG and Vent-MAXX filters?
Pur-MAXX SG / Mem-Pleat SG is a 0.2 micron PES membrane built for sterilizing liquids. Vent-MAXX is a different construction entirely — a double-layer hydrophobic PTFE membrane — built for tank vent and gas filtration, not liquid sterilization.
What sizes are available for MAXX-Cap / Brevi-Cap filter capsules?
MAXX-Cap / Brevi-Cap ultrapure polypropylene filter capsules are available from 2" up to 40", in 0.2 and 0.1 micron ratings, for full-scale single-use filtration.
Get the right membrane rating for your process
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Strainrite models in the LibertyCES catalog
4 models across 4 product lines.
| Model / line | Type | Size / capacity / flow | Pressure | Temperature | Wetted material | Source |
|---|---|---|---|---|---|---|
| Pur-MAXX SG / Mem-Pleat SG Sterilizing Grade Membrane Filter | Filter Cartridge | 0.2 micron | PES membrane | Allied Fluid Products — Bay Area Fluid Handling & Sealing Distributor | ||
| Vent-MAXX Hydrophobic PTFE Membrane Filter | Filter Cartridge | - | double-layer PTFE | Allied Fluid Products — Bay Area Fluid Handling & Sealing Distributor | ||
| Endo-MAXX CN Charged Nylon Membrane Filter | Filter Cartridge | 0.2 micron | charged nylon | Allied Fluid Products — Bay Area Fluid Handling & Sealing Distributor | ||
| MAXX-Cap / Brevi-Cap Filter Capsule | Filter Cartridge | 2"-40"; 0.2/0.1 micron | ultrapure polypropylene | Allied Fluid Products — Bay Area Fluid Handling & Sealing Distributor |
This table is part of the equipment catalog dataset (CSV and JSON).
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated