{"aspect_id":"AS106","aspect_name":"mass-concentration","aspect_reference":null,"aspect_symbol":"\\gamma","name":"mass-concentration kilogram per metre cubed","scale_id":"SC841","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":"\\gamma kg.m-3","unit_id":"UN65","unit_name":"kilogram per metre cubed","unit_reference":null,"unit_symbol":"kg.m-3"}