Plastic Pellet Retention System 70 µm | EU 2025/2365 Compliant | Winkler
Effective Prevention of Pellet Loss Under EU Regulation 2025/2365
Preventing microplastic emissions is no longer just a matter of responsibility for the plastics-processing industry – it's a legal requirement. Under EU Regulation 2025/2365, industrial operators must technically prevent plastic pellet loss via surface drainage. Our specialised retention system with a 70 µm micron rating offers the ideal solution.
Whether in loading zones, silo bays or yard drains close to production, our ready-to-install drain basket sets and replacement filters stop particles right where they occur. This legally secures your site and meets the strict technical requirements for audits such as Operation Clean Sweep (OCS).
The Winkler Principle: Maximum Sealing Without "Slip-Through"
In industrial filtration, a filter is only as good as its seal. Many standard solutions fail because pellets slip through between the bucket rim and the shaft wall – so-called "slip-through".
Our system uses mechanical forced flow:
- Integrated collar: The dimensionally stable 70 µm fabric has a collar that fits flush over the rim of the drain basket.
- Industrial drawstring: A reinforced drawstring securely fixes the filter to the bucket body.
- Zero-bypass guarantee: We deliberately avoid an emergency overflow. All incoming water is forced through the fine filter fabric, so no pellets can reach the sewer network uncontrolled.
A Precise Fit for All Catch Basins to DIN 4052
To ensure pellet retention works seamlessly across your entire site, we offer our system for all common designs. Each set consists of a robust drain basket and the pre-fitted 70 µm high-performance filter.
Overview of available models:
- Model A4: For deep road drains (Form A, Ø 450 mm). Special feature: maximum capacity for high sediment loads.
- Model B1: For shallow road drains (Form B, Ø 450 mm). Special feature: ideal for shallow installation depths.
- Model C3: For speciality catch basins (Form C, Ø 300 mm). Special feature: a compact solution for industrial drains.
- Model D1: For compact drains (Form D, Ø 300 mm). Special feature: shallow, narrow design.
- Yard bucket: For yard and point drainage (small square/round). Special feature: protection in areas close to production.
- Replacement filter: Fits all models listed above. Special feature: universal fabric, sold individually for flexible retrofitting.
Sustainability and Cost-Efficiency Through Retrofitting
At Winkler Filtertechnik, we're committed to durable solutions. If you already have sturdy drain baskets to DIN 4052, you don't need to replace them. Our 70 µm replacement filter can be ordered individually and integrated into your existing stock in just a few steps. This saves money and conserves resources, while giving you full compliance with the new EU legislation – a decisive advantage for sectors such as Energy & the Environment, Chemicals & Raw Materials and Civil Engineering & Landscaping.
Advice From an Industrial Filtration Specialist
Identifying the right bucket sizes across a large industrial site can be complex. We're happy to support your planning, especially in Transport & Logistics. As specialists in industrial and environmental filtration, we're happy to support your planning. We'll help you equip your site in a legally compliant, environmentally sound way, so you're well prepared for upcoming audits and environmental inspections. Use our filtration technology consulting service, or our specific industrial filtration consulting.
FAQ – Frequently Asked Questions About Pellet Retention
Here you'll find answers to the most common questions.
The regulation requires businesses that handle plastic pellets to take technical measures to prevent microplastics entering the environment. Our 70 µm retention systems are a recognised technical barrier for implementing these legal requirements directly within your drainage infrastructure.
This depends on the design of your catch basin. Standard road drains are usually 450 mm in diameter (model A4 or B1). More compact drains in halls or narrow yards often use the 300 mm size (model C3 or D1). We're happy to help you identify your existing stock correctly over the phone.
The high-performance polymer we use has a very high open screen area, enabling an excellent flow rate despite the fine mesh size. Regularly clearing the bucket of leaves and sediment ensures drainage performance is maintained even during heavy rainfall.
Yes, sustainability matters to us. You can order the 70 µm filters individually as replacement filters. This means you don't need to replace the entire set (bucket + filter) if the fabric is worn after years of intensive use.
OCS requires evidence of technical retention measures at all potential release points. By installing our bypass-free filters, you demonstrate to auditors the highest standard of technical diligence in preventing pellet loss.










