A man pours liquid nigrogen into an instrument at a radiocarbon laboratory in Boulder, Colorado.

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Research Assistant Patrick Cappa pours liquid nitrogen into an instrument at the Laboratory for AMS Radiocarbon Preparation and Research, Institute for Arctic and Alpine Research in Boulder, Colorado. The lab performs state-of-the-art radiocarbon preparation and measurement services.

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Size: 5314px × 3542px
Location: Boulder,Colorado,USA
Photo credit: © Ethan Welty / Alamy / Afripics
License: Royalty Free
Model Released: No

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