A fluid medium monitoring apparatus of the present invention comprises: a light source unit for irradiating light; a first collimator unit for collimating light irradiated from the light source unit; a flow cell unit in which a fluid medium flows and light is allowed to absorb the wavelength of the fluid medium while proceeding along the moving direction of the fluid medium; and a light detection unit for detecting the wavelength of the light passing through the flow cell unit.

A flow cell device of the present invention comprises a flow path part in which a flow medium flows, and a flow cell part in which a flow path is formed.

A fluid medium monitoring apparatus of the present invention comprises: a light source unit for irradiating light; a first collimator unit for collimating light irradiated from the light source unit; a flow cell unit in which a fluid medium flows and light is allowed to absorb the wavelength of the fluid medium while proceeding along the moving direction of the fluid medium; and a light detection unit for detecting the wavelength of the light passing through the flow cell unit.

The present disclosure relates to an atomic absorption spectrometer for analyzing a sample, including a radiation source unit for generating a measuring beam, an atomization unit for atomizing the sample such that the atomized sample is located in a beam path of the measuring beam, and a detecting unit for detecting absorption of the measuring beam. The radiation source unit includes at least one light-emitting diode. According to the present disclosure, the detection unit includes a polychromator arrangement, in particular a high-resolution polychromator arrangement, as a spectrometric arrangement.

A measuring device for determining a substance concentration of a fluid arranged in a measurement volume includes a source emitting a source spectrum, a wavelength-selective means arranged before the measurement volume, a measurement space limiting the measurement volume at least in a beam path, and a detector for measuring a wavelength-related absorption of a measurement spectrum having passes through the measurement volume. A fluorescence-reducing element is arranged in the beam path between the detector and the measurement volume. A beam splitter is arranged between the source and the measurement volume.

A flow cell device of the present invention comprises a flow path part in which a flow medium flows, and a flow cell part in which a flow path is formed.

A spectroscopic device, which may be a handheld spectroscopic light source, which uses ambient light as a primary broadband light source, but which may be supplemented with an auxiliary light source to supplement band regions which may be deficient in the broad band source. The spectroscopic device makes use of a number of parallel control channels to monitor for sufficient light and to compensate for variations in the input light levels.