What is the maximum amount of head space required for a full drum of waste?

The maximum amount of headspace required for a full drum of waste typically depends on the type of waste being stored and regulatory guidelines. Generally, for hazardous waste, a headspace of at least 10% of the drum's total volume is recommended to allow for expansion of gases and to prevent pressure buildup. However, it's crucial to consult specific regulations and guidance documents relevant to the type of waste and jurisdiction to ensure compliance.