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  2. Continuous emissions monitoring system - Wikipedia

    en.wikipedia.org/wiki/Continuous_emissions...

    A small sample of flue gas is extracted, by means of a pump, into the CEM system via a sample probe. Facilities that combust fossil fuels often use a dilution-extractive probe to dilute the sample with clean, dry air to a ratio typically between 50:1 to 200:1, but usually 100:1. Dilution is used because pure flue gas can be hot, wet and, with ...

  3. Landfill gas monitoring - Wikipedia

    en.wikipedia.org/wiki/Landfill_gas_monitoring

    The sample is then read with a FID or sent to a lab for full analysis. Integrated regulatory limits tend to be 50 ppm or less. Gas probes, also known as perimeter or migration probes, are used for subsurface monitoring and detect gas concentrations in the local environment around the probe. Sometimes multiple probes are used at different depths ...

  4. Genesis (spacecraft) - Wikipedia

    en.wikipedia.org/wiki/Genesis_(spacecraft)

    Genesis was a NASA sample-return probe that collected a sample of solar wind particles and returned them to Earth for analysis. It was the first NASA sample-return mission to return material since the Apollo program, and the first to return material from beyond the orbit of the Moon.

  5. Genie Energy - Wikipedia

    en.wikipedia.org/wiki/Genie_Energy

    Genie Retail Energy (GRE) comprises the company’s domestic electricity and natural gas supply companies. Commonly referred to as “Retail Energy Providers” or “REPs”, these companies offer traditional and renewable/green energy supply options to residential and small/medium commercial clients throughout deregulated energy states in the United States.

  6. Sample-return mission - Wikipedia

    en.wikipedia.org/wiki/Sample-return_mission

    In November 2010, scientists at the agency confirmed that, despite failure of the sampling device, the probe retrieved micrograms of dust from the asteroid, the first brought back to Earth in pristine condition. [18] The Russian Fobos-Grunt was a failed sample-return mission designed to return samples from Phobos, one of the moons of Mars. It ...

  7. Vortex mixer - Wikipedia

    en.wikipedia.org/wiki/Vortex_mixer

    A Scientific Industries Inc. Vortex-Genie 2 vortex mixer in operation. A vortex mixer, or vortexer, is a simple device used commonly in laboratories to mix small vials of liquid. It consists of an electric motor with the drive shaft oriented vertically and attached to a cupped rubber piece mounted slightly off-center. As the motor runs the ...