Like Lakshmi said, the delivery block is one way of achieving your requirement
In case there is a real inspection of goods that occurs before the delivery, you can setup a quality inspection at the time of delivery (standard inspection type 10. Please check this and confirm as I am not sure if 10 is correct)
When a delivery is created, an inspection lot is created and the material is moved into QI stock.
This will allow you to also setup certain standard characteristics/parameters that are checked for each and every material. For example, for chemicals, the quality test can be to ensure that the sodium content is at least 8%, water content is at least 70% and so on. Then you can perform a results recording of the actual result where you record the actual sodium content, water content etc. Once the material passes the quality inspection, a usage decision is taken whether to accept or reject (more codes can be defined) the material. Once the inspection lot is accepted, it is automatically moved from QI stock to Unrestricted Stock by SAP.