{"aspect_id":"AS106","aspect_name":"mass-concentration","aspect_reference":"https://si-digital-framework.org/quantities/MACO","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":"https://si-digital-framework.org/SI/units/kilogram.metre-3","unit_symbol":"kg.m-3"}