All ranges of W-Natural ^® have been verified by TÜV AUSTRIA to be suitable for biodegradability, compostability, compost quality and plant compatibility. W-Natural® which is compatible with The European Norm EN 13432 complies with the following which are OK compost INDUSTRIAL requirements:

• At least 90 % of the test material has to be biodegraded within 6 months at 50±2ºC with a relative humidity of 50-55%.
• At least 90 % of the product should be able to pass through a 2 × 2 mm mesh sieve after 12 weeks.
• Criteria of EN 13432 need to be fulfilled (heavy metals, fluorine, volatile solids and plant toxicity)

Since W-Natural has also starch based grades, FREE self declaration is available upon request.