All certifications and recertifications require, at a minimum, Heavy Metals / Fluorine / Cobalt, Ash (VOC), FTIR, and thickness and grammage (if applicable) measurements. These must have been conducted within the past 12 months. Depending on the specific formulation, other tests might be required on the end product or certain ingredients, as described below. These tests do not have an expiration date for validity purposes.
Biodegradation testing measures the inherent ability of organic carbon in a material to be consumed by microorganisms and shows that the material or item will not accumulate in nature.
Disintegration testing measures whether the finished item physically breaks down and falls apart, demonstrates that the item will not create visual contamination in the compost, and indicates that the item is being successfully attacked by microorganisms (so that the carbon is readily available for biodegradation). It is based on the maximum thickness (or grammage for natural fiber) of the finished item. The maximum thickness/grammage of the product used for the disintegration test determines the certified maximum thickness/grammage for the item. Resins and components should be certified to a maximum thickness/usage that will cover the thickest/densest usage of the resin/component by customers.
Compost Quality testing includes Metals / Fluorine, Ash (VOC), and FTIR, as well as tests for ecotoxicity. These tests and restrictions are designed to ensure that the compostable material or item does not have negative effects on compost quality.
To read further on all tests refer to the BPI Certification Scheme.