The system operated by a business whereby stock-in-trade of goods and materials is kept at necessary levels. This may involve the use of bin cards or other records on which movements in stock are noted in such a way that the storekeeper is automatically warned to reorder. There may also be mathematical forms of stock analysis which indicate not only minimum and maximum stock levels but also quantities which need to be ordered to I cover projected production levels. The efficiency of the system of stock control within a business can determine its resilience to changes in trading patterns and, ultimately, its chances of survival,
Reference: The Penguin Business Dictionary , 3rd edt.