| Exact name of test procedure/method | Identification of test procedure/method | 
| Corrrosion of metals and alloys. Corrosivity of atmospheres. Classification | ISO 9223 | 
| Corrrosion of metals and alloys. Corrosivity of atmospheres.Guiding values for the corrosivity categories | ISO 9224 | 
| Protection of metallic materials against corrosion-Corrosion likelihood in atmospheric environment-Classification, determination and estimation of corrosivity of atmospheric environment | EN 12500 |