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2. Gas electron multiplier - Wikipedia

   en.wikipedia.org/wiki/Gas_Electron_Multiplier

   A gas electron multiplier (GEM) is a type of gaseous ionization detector used in nuclear and particle physics and radiation detection.. All gaseous ionization detectors are able to collect the electrons released by ionizing radiation, guiding them to a region with a large electric field, and thereby initiating an electron avalanche.

3. Photoionization detector - Wikipedia

   en.wikipedia.org/wiki/Photoionization_detector

   The photoionization detector is an efficient and inexpensive detector for many gas and vapor analytes. PIDs produce instantaneous readings, operate continuously, and are commonly used as detectors for gas chromatography or as hand-held portable instruments. Hand-held, battery-operated versions are widely used in military, industrial, and ...

4. Robert Koch Institute - Wikipedia

   en.wikipedia.org/wiki/Robert_Koch_Institute

   The Robert Koch Institute (RKI) is a German federal government agency and research institute responsible for disease control and prevention. It is located in Berlin and Wernigerode . As an upper federal agency, it is subordinate to the Federal Ministry of Health .

5. Geiger counter - Wikipedia

   en.wikipedia.org/wiki/Geiger_counter

   The sound of a geiger counter. A Geiger counter (/ ˈ ɡ aɪ ɡ ər /, GY-gər; [1] also known as a Geiger–Müller counter or G-M counter) is an electronic instrument for detecting and measuring ionizing radiation with the use of a Geiger–Müller tube.

6. Electron capture detector - Wikipedia

   en.wikipedia.org/wiki/Electron_capture_detector

   The detection limit for electron capture detectors is 5 femtograms per second (fg/s) and the detector commonly exhibits a 10,000-fold linear range. [ citation needed ] This made it possible to detect halogenated compounds such as pesticides and CFCs , even at levels of only one part per trillion ( ppt ), thus revolutionizing our understanding ...

7. Gas chromatography–mass spectrometry - Wikipedia

   en.wikipedia.org/wiki/Gas_chromatography–mass...

   The mass spectrometry process normally requires a very pure sample while gas chromatography using a traditional detector (e.g. Flame ionization detector) cannot differentiate between multiple molecules that happen to take the same amount of time to travel through the column (i.e. have the same retention time), which results in two or more ...