nitrogen analyzer

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• CHN analyzer — A CHN Analyzer is a scientific instrument which can determine the elemental composition of a sample. The name derives from the three primary elements measured by the device: carbon (C), hydrogen (H) and nitrogen (N). Sulfur (S) and oxygen (O) can …   Wikipedia

• Carbon to nitrogen ratio — The C/N ratio or Carbon to Nitrogen ratio can, amongst other things, be used in analysing sediments and compost. One importance is the influences the nitrogen availability in soils.C/N ratios in the range 6 8 are usually from marine sources,… …   Wikipedia

• Thermal and Evolved Gas Analyzer — The Thermal and Evolved Gas Analyzer (TEGA) is a scientific instrument aboard the Phoenix spacecraft. TEGA s design is based on experience gained from the failed Mars Polar Lander. Soil samples taken from the Martian surface by the robot arm are… …   Wikipedia

• thermalneutron analyzer — thermal neutron analyzer n. A device that detects explosives by sensing gamma radiation given off when nitrogen in the explosive is bombarded with and absorbs low energy neutrons. It is used, for example, for bomb detection in airports. * * * …   Universalium

• blood gas analyzer — an instrument for measuring partial pressures of oxygen, carbon dioxide, carbon monoxide, and nitrogen in blood …   Medical dictionary

• Louis Calder Center — The Louis Calder Center is Fordham University s biological field station. The Calder Center is a protected forest preserve located convert|30|mi|km north of New York City in Armonk, New York, and is the only full time ecological research field… …   Wikipedia

• chemical compound — Introduction  any substance composed of identical molecules consisting of atoms (atom) of two or more chemical elements (chemical element).       All the matter in the universe is composed of the atoms of more than 100 different chemical elements …   Universalium

• AutoAnalyzer — is an automated analyzer using a special flow technique named continuous flow analysis (CFA) first made by the Technicon Corporation. The instrument was invented 1957 by Leonard Skeggs, PhD and commercialized by Jack Whitehead s Technicon… …   Wikipedia

• mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …   Universalium

• radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

• Nitrox — Typical Nitrox cylinder marking Nitrox refers to any gas mixture composed (excluding trace gases) of nitrogen and oxygen; this includes normal air which is approximately 78% nitrogen, 21% oxygen, and 1% other gases, primarily argon.[1][2] …   Wikipedia