EDANA Flushability Testing Standards Nonwoven Supplier
For wipes brand QA managers and product development teams, understanding EDANA flushability testing standards is essential to launching compliant flushable wipe products in European and global markets. EDANA (European Disposables and Nonwovens Association) in collaboration with INDA has developed the most widely recognized flushability assessment framework for nonwoven-based wipes. Favourite Fab is a nonwoven supplier that provides cellulose and spunlace substrates specifically designed to support GD4 and GD5 flushability compliance — backed by supply chain transparency and B2B technical support.
What Are the EDANA/INDA Flushability Guidelines?
EDANA and INDA have jointly published a series of “Guidelines for Assessing the Flushability of Nonwoven Consumer Products” (commonly referred to as GD guidelines). These are not regulations but are widely adopted by brands, retailers, and regulatory bodies as the technical standard for flushable claim validation:
- GD4 (4th Edition): Introduced more rigorous testing methods reflecting real-world wastewater infrastructure conditions
- GD5 (5th Edition): The current edition, published to align with advances in wastewater infrastructure testing and international regulatory developments including the US WIPPES Act
- GD5 adds the Dynamic Pressure Flow Test (DPFT) and refines the Slosh Box test parameters
- Both editions require assessment of seven properties: dispersibility, settling, aerobic biodegradation, anaerobic biodegradation, aquatic toxicology, plastic-free composition, and absence of persistently buoyant material
The Seven GD5 Assessment Categories
The GD5 framework requires nonwoven-based flushable products to pass assessment across seven categories. From the nonwoven fabric supplier’s perspective, several categories are directly related to the substrate:
| GD5 Category | Test Method | Fabric Supplier Relevance |
|---|---|---|
| 1. Toilet and Drain Clearance | Toilet Paper Tube Test (TPPT) | Direct — substrate dispersibility determines pass/fail |
| 2. Slosh Box Disintegration | Modified INDA Slosh Box | Direct — substrate must break into small fragments |
| 3. Dynamic Pressure Flow | DPFT (GD5 new) | Direct — substrate must pass through simulated pipe conditions |
| 4. Settling | Column Float/Settling Test | Direct — dispersed material must settle, not float persistently |
| 5. Aerobic Biodegradation | ISO 14855 | Direct — fiber content determines biodegradation rate |
| 6. Anaerobic Biodegradation | ISO 11734 | Direct — fiber content determines anaerobic biodegradation |
| 7. Aquatic Toxicity | OECD 201/202/203 | Indirect — fiber and chemical finish inputs |
Favourite Fab Spunlace Substrates for GD4/GD5 Compliance
Favourite Fab manufactures cellulose and natural fiber spunlace substrates engineered from the ground up to support GD4 and GD5 flushability performance. Our approach includes:
- Cellulose-dominant fiber selection: 100% cellulose, cellulose/viscose blends, and cotton/cellulose blends — all natural origin fibers with demonstrated dispersibility in wastewater conditions
- Wet strength management: In-use wet strength must be high enough for consumer use, but must degrade rapidly in wastewater. Our fiber and bonding specifications are optimized for this balance
- Chemical finish selection: All processing aids and finishes are selected for aquatic toxicity and biodegradation compatibility
- No synthetic plastic fibers: Our flushable grades contain no polypropylene, polyester, or other persistent synthetic fibers that would fail GD5 Category 5/6
Supply Chain Transparency for QA Teams
Wipes brand QA managers need supply chain documentation to support their GD5 assessment submissions. Favourite Fab provides:
- Fiber composition declaration with origin documentation
- Chemical finish safety data sheets (SDS) for all processing aids
- Physical test reports per lot (GSM, tensile, elongation)
- Facilitation of third-party GD5 testing at accredited laboratories on request
- Technical support for QA teams navigating GD5 documentation requirements
Frequently Asked Questions
Is GD5 compliance required by law for flushable wipes sold in Europe?
GD5 is not itself a legal regulation but is widely adopted as the technical framework by retailers, water utilities, and national regulatory bodies. Several EU member states and UK authorities reference EDANA/INDA guidelines in guidance for flushable claims. Brands seeking to maintain “flushable” labeling with major retailers or in regulated markets increasingly treat GD5 compliance as effectively mandatory.
What is the difference between GD4 and GD5 for fabric suppliers?
GD5 added the Dynamic Pressure Flow Test (DPFT) and tightened the Slosh Box test parameters. From the fabric supplier perspective, GD5 requires substrates with more reliable dispersibility under pressure conditions. Cellulose substrates that passed GD4 generally also pass GD5, but product-level testing to GD5 is required for current compliance claims.
Can Favourite Fab supply samples for flushability testing?
Yes. We supply substrate samples specifically for QA and product development testing purposes. Samples are available in the GSM and fiber blend specified for your product. Contact our technical sales team with your product specification and testing timeline to arrange sample dispatch.
Do you offer exclusive supply arrangements for flushable wipes substrates?
Exclusive supply arrangements and preferred supplier programs are available for buyers with committed annual volumes. Discuss your volume forecast and program requirements with our B2B sales team to explore what arrangement best suits your supply chain strategy.
Partner with Favourite Fab for EDANA-Compatible Flushable Nonwoven
Sourcing from an EDANA flushability testing standards nonwoven supplier that understands the GD4/GD5 framework reduces your compliance risk and speeds time-to-market for new flushable wipes products. Favourite Fab provides the substrate, the documentation, and the technical support that wipes brand QA teams need. Request a substrate sample and supply proposal from our B2B team today.
Related B2B Resources
Gaurav Garg
I'm Gaurav Garg, CEO of Favourite Fab, a company on a mission to revolutionize the nonwoven industry with sustainable practices. We work hand-in-hand with manufacturers and suppliers who share our commitment to eco-friendly production. With a deep interest in textile innovation, I'm passionate about educating consumers about sustainable material options and their potential to transform the nonwoven landscape.
