Active Spectrum manufactures magnetic resonance spectroscopy solutions based on the patented Micro-ESR (electron spin resonance) technology. They design the world's first and only purpose-built on-line ESR spectroscopy solution! The revolutionary technology can be used for oil analysis and online analysis of petroleum, lubricants, as well as many other industrial sensing applications including the detection of reactive oxygen and nitrogen species. The Micro-ESR is also an excellent teaching tool for undergraduate chemistry and physics. It is portable and will fit in any lab including a fume hood or even a glove box.