Abstract: The invention relates to a method of and apparatus for preparing a sample for imaging or diffraction experiments under cryogenic conditions, comprising the steps of applying a sample to sample carrier, such as a film on a support, in particular a grid comprising such a film on a support, or removing residual medium, typically liquid, from an incubated sample on a film on a support, and vitrifying the sample. The sample is vitrified by directing a jet of liquid coolant to the center of the film and onto the sample.

Abstract: The invention relates to a method of and apparatus for preparing a sample for imaging or diffraction experiments under cryogenic conditions, comprising the steps of applying a sample to sample carrier, such as a film on a support, in particular a grid (3) comprising such a film on a support, or removing residual medium, typically liquid, from an incubated sample on a film on a support (3), and vitrifying the sample. The sample is vitrified by directing a jet (50, 51) of liquid coolant to the center of the film (3) and onto the sample.

Abstract: A breath condensing apparatus includes a mouthpiece, a condenser having an inlet coupled to the mouthpiece, a first container for collecting condensate communicating with an outlet of the condenser, and a second container for collecting residual, non-condensed exhaled breath coupled to the condenser. A method of condensing exhaled breath includes the features of receiving exhaled vapor into a condenser, condensing at least part of the exhaled vapor, collecting at least part of residual, non-condensed exhaled vapor, recirculating at least part of the collected residual vapor through the condenser, condensing at least part of the recirculated vapor, and collecting condensate.