The tare describes the weight of a packaging that encloses and protects the goods when sold. In trade, the tare is needed for weight determination, because it is important to know the weight of the pure content. In trade, the tare is the difference between the total weight of the goods and the weight of the content.
The tare must be given in many cases to protect the customer from paying the packaging. When it comes to buying pure weight goods, the packaging is always weighed first. The tare key on the scale ensures that the scale is set to zero, indicating only the pure weight of the goods being traded.