A Pinhead in Berlin - Animated Size Comparison

Ever desperately wanted the needle in a haystack? Or a single grain in 2000 grain wagons? It gets even better: analytical chemistry can detect the tiniest amounts, as our video shows. About danger says this first nothing. Important is the risk assessment. With modern analytical methods, even the tiniest quantities can be detected. Over the years, the sensitivity of the measurement methods has increased a thousandfold with each step. Our video illustrates what ppm and Co. mean.