… are as far away as possible from local sources of air pollution. Urban areas with heavy traffic, industry or heating installations should not affect the measurements. … are as far away as possible from local sources of air pollution. Urban areas with heavy traffic, industry or heating installations should not affect the measurements. …

… from the installation materials. The most notorious of these is lead. This heavy metal was used for a long time as a material for water pipes due to its … drinking water installations area, a variety of materials - such as plastics and metals for pipes, sealing materials and valves - are used which might be partially …

… 4MS-Initiative (53.56 kB) 4MSI Invitation (38.08 kB) Documents - Common Approach Metallic Materials Common Approach on Metallic Materials - Part A: Methodologies for testing and accepting compositions to be included in the Positive list of compositions Common Approach on Metallic Materials - Part B: Positive list of compositions Common Approach on …