Industrial Compostability Passed off as Home Compostable on Shelf
Finished packaging claims demand independent home compostability certification because industrial resin testing excludes ambient degradation and converting inks.
Disintegration Testing
Physical Evaluation
Analytical procedures for evaluating compostable packaging measure how rapidly a material breaks down into physically indistinguishable pieces under controlled moisture and temperature. During disintegration testing, the substrate is mixed with organic waste and composted under specific laboratory conditions for a period of up to twelve weeks for industrial standards, or six months for home composting. This differs from biodegradation testing, which measures chemical breakdown at a molecular level, by focusing purely on physical fragmentation.
It determines if the material will create uncompostable debris in a real-world composting pile.
Process Parameter
Test chambers must maintain precise moisture and aeration levels to simulate real compost environments. For disintegration testing, technicians periodically turn the mixture and monitor the temperature to ensure microbial activity remains high. This process ensures that the degradation is driven by biological and physical mechanisms rather than simple thermal breakdown.
It provides a reliable simulation of how the packaging will behave in a municipal or household compost bin.
Sieve Analysis
Sieve screens are used to measure the remaining fragments after the test period concludes. Under standard methods, the compost is washed through a two-millimeter mesh to capture any remaining material. A passing score requires that less than ten percent of the original dry weight of the test material consists of particles larger than two millimeters.