Abstract: Nigerian industries were grouped into three categories-small-, medium- and large-scale to determine their response to the practice of quality control systems. Area of inventory examined includes manpower, raw material and finished goods. Other inventory inbuilt factors such as order time, lot size, cost of order, number of order, demand and production rate were also assessed. The evaluation of data collected from industries for the aforementioned factors was done using simple statistics based on average response out of total responses. The results of the study showed that the size of industry, small-, medium- and large-scale, has a significant effect on both the size of staff and the level of involvement in inventory management of both the raw material and the finished product.