Looks like they use sulfuric acid at 0.5 to 5 M over a 24-hour period to depolymerize the plastics. So highly acidic, but probably better to keep your acids in

Looks like they use sulfuric acid at 0.5 to 5 M over a 24-hour period to depolymerize the plastics. So highly acidic, but probably better to keep your acids in polyethylene containers!