This term is used to describe the empty space in large tanks used to transport liquids or grain. Marine transport regulations will prevent a tank from being filled to 100% of its capacity, placing a limit such as 98% on the available capacity. The 2% unused capacity is known as ullage.

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Discover the world’s largest Glossary of Procurement terms

With over 800 Procurement specific terms (and growing) you will find everything you need to know or thought you knew about the Procurement function. Our aim is to provide you with a comprehensive list collated from the Comprara Groups hub of training and consulting source materials.The Procurement Glossary has been compiled by industry expert Paul Rogers.