The United States of America, As Represented by the Secretary, Department of Health and Human Services

Edward L Mertz

James V Sullivan

Optical cells include a spacer formed of a hydrocarbon-resistant polymer, so that fluids such as hydrocarbons and alcohols can be introduced to a sample space, or include a fluid inlet and a heated inlet tube, so that a humid gas can be introduced to the sample space without condensation occurring. Optical cells can be used with, for example, solid, gel, and liquid samples. Measurements can be performed with various selected sample gaps of an optical cell.

Flow-through, inlet-gas-temperature-controlled, solvent-resistant, thermal-expansion compensated cell for light spectroscopy

Optical cells are non-actively compensated to ensure that a sample gap of a sample space remains nearly constant upon a change in temperature. Fluids can be flowed through the sample space of the optical cells.

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Rockville, MD, United States of America

Edward L Mertz