There are a variety of certificates compostable packaging can achieve. Some guarantee that it will compost in a “standard” home composter. Others that it will compost in an industrial composting facility. And some ensures that the raw material is non-toxic and environmentally friendly. Our mailers have been awarded with several of these certificates. Below is a list of them along with an explanation of the certificates and the testing processes.
1. Chemical Test – A full disclosure of all constituents. Heavy metals may not be present above the maximum allowed levels.
2. Biodegradability – Proof must be made that in the span of 12 months at least 90 % of the material has been converted into CO2, at ambient temperature (between 20°C and 30°C). At no point is the temperature allowed to go above 30°C. The biodegradation happens in controlled composting conditions, in order to measure the amount of CO2 produced in the composting process of the material.
3. Disintegration – After 6 months a minimum of 90 % of the material, as compared to the original mass, must disintegrate into pieces no bigger than 2mm. This is tested by sieving the material on a sieve with a 2mm screen. Disintegration test is also performed at ambient temperature (between 20°C and 30°C).
4. Compost Quality (Ecotoxicity) – The resultant compost is examined to ensure that it is nontoxic and will not impact plant growth. This is examined through an agronomic test.