- Definition: The term “compostable” refers to a material or product’s ability to break down into natural, non-toxic substances in a composting environment, under specific conditions including temperature, microbial activity, aeration, moisture, carbon to nitrogen ratio and time.
- Home / Residential / Backyard Composting
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- The term “home compostable” refers to a material or product’s ability to break down into natural, non-toxic substances in a home or residential composting environment, under specific conditions including temperature, microbial activity, aeration, moisture, carbon to nitrogen ratio and time. Home composting conditions tend to be smaller-scale in less controlled environments.
- There are certifications and globally recognized standards for home composting requirements including the TUV Home Compost and Composting Manufacturing Alliance (CMA) standards to offer assurance that a product is compatible with residential composting infrastructure.
- Industrial / Commercial Composting
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- Commercial or industrial composting facilities offer more optimized and controlled conditions to break down organic waste, reaching temperatures of up to 130-160 degrees Fahrenheit with a supportive microbial environment. As a result, commercial or industrial composting can break down a wider range of materials, including certain bioplastics.
Blue Callout: If the term “compostable” is used without reference to it being an industrial process, you should still assume that the “compostable” materials in question will only break down in the more demanding industrial setting, and not in backyard composting. Additionally, most compostable plastics are not accepted at recycling facilities and will contaminate recycling streams.