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W-Natural®: Certified bio polymers for nature!

All ranges of W-Natural ® have been verified by TUV Austria to be suitable for biodegradabilty, compostability, compost quality and plant compatibility. W-Natural® which is compatible with The European Norm EN 13432 and ASTM D6400 complies with the following 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.

SUNAR NP offers its customers certified quality. For more information please contact us at