Scan the menu in a top-class restaurant and you may encounter premium ingredients that promise an exceptional dining experience. But things aren't always as they appear. What do we really know about such products, other than what the labels would have us believe? Sometimes, surprisingly little.

Air pollution monitoring is a very important topic to protect human health. Many standards regulate the emission of fuel powered vehicles like automotives (cars, trucks, motorcycles), boats, etc. or industrial sources of air pollution. In particular, ultra-fine particles such as soot particles can accumulate in the lung are classified as carcinogenic, but also asthma, allergies, cardiovascular and respiratory diseases are caused by fine dust. Filter weighing is a back-weighing method to determine the level of air pollution.