The US Federal Trade Commission (FTC) has ruled against an Ohio-based plastics film maker, calling ECM BioFilms’ claims that its product is biodegradable “false and unsubstantiated.”

The FTC ruling overturns an administrative law judge’s decision in January that ECM’s MasterBatch Pellets cause plastics to biodegrade and that such claims are supported by evidence, including more than 20 gas evolution tests proving biodegradability.