These are our three laser isotope analysers.  The Picarro 1102-i is our oldest laser and continues to give good service.  Like the other Picarro it analyses water vapour in air or nitrogen, but can also accept injected liquid samples.  The 2130-i is used only for vapour and at the moment is connected in parallel with the Aerodyne machine.  These two instruments form the heart of our gas exchange isotope system.

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