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Researchers from Kansas State University and University of Kansas use liquid nitrogen to freeze a core of stream sediment collected from Kings Creek at Konza Prairie Biological Station.

September 18, 2017

Kansas researchers use liquid nitrogen to freeze a sediment core.

Researchers from Kansas State University and University of Kansas use liquid nitrogen to freeze a core of stream sediment collected from Kings Creek at Konza Prairie Biological Station. The core was sectioned and used to analyze genes of nitrogen cycling organisms from the stream sediment microbiome. The method is unofficially referred to as the "Popsicle method" because the copper tube is inserted into the sediment and liquid nitrogen poured into the tube to freeze the sediment in a shell around the tube.

Credit: Walter Dodds, Kansas State University

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