Abstract: Disclosed herein is a system, particularly a microscope system, for confocal Raman-spectroscopic measurements. The system is configured to detect minute sample amounts of microbes in a sample chamber with a lid, wherein the system is configured such that a comparably large working distance between the objective lens and the sample is sustained such that a measurement can be performed through the lid of the sample chamber. This allows for cultivating and measuring the sample in the same container.

Abstract: An optical element has a substrate body made from transparent plastic and a coating having multiple layers. The coating includes a hard lacquer layer adjoining the substrate. The coating has a diffusivity ensuring the absorption of water molecules passing through the coating in the substrate and the release of water molecules from the substrate through the coating from an air atmosphere on that side of the coating facing away from the substrate with a flow density which, proceeding from the equilibrium state of the quantity of water molecules absorbed in the substrate in an air atmosphere at 23° C. and 50% relative humidity, brings the setting of the equilibrium state of the quantity of water molecules absorbed in the substrate in an air atmosphere at 40° C. and 95% relative humidity within an interval not more than 10 h longer than for setting this equilibrium under corresponding conditions with an identical uncoated substrate.

Abstract: The invention relates to a system (1) for confocal Raman-spectroscopic measurements, comprising at least the following components: a sample chamber (10), wherein said sample chamber (10) is configured to house a sample (2) in a closed chamber volume (12) of the sample chamber (10), an excitation light source (3), an objective lens (4), configured to focus excitation light (32) of the excitation light source (3) through a ceiling portion (11) of the sample chamber (10) in a focal volume (31) in the chamber volume (12) and to collect inelastically scattered light (33) stemming from the focal volume (31), a confocal detection arrangement (20), comprising means for a confocal detection (22, 23) of a Raman signal comprised in the inelastically scattered light (33) from the focal volume (31), and a detector (21) that is configured to detect and to record said Raman signal, wherein the distance (5) between the ceiling portion (11) of the sample chamber (10) and the focal volume (31) is greater than one millim

Abstract: An optical element has a substrate body made from transparent plastic and a coating having multiple layers. The coating includes a hard lacquer layer adjoining the substrate. The coating has a diffusivity ensuring the absorption of water molecules passing through the coating in the substrate and the release of water molecules from the substrate through the coating from an air atmosphere on that side of the coating facing away from the substrate with a flow density which, proceeding from the equilibrium state of the quantity of water molecules absorbed in the substrate in an air atmosphere at 23° C. and 50% relative humidity, brings the setting of the equilibrium state of the quantity of water molecules absorbed in the substrate in an air atmosphere at 40° C. and 95% relative humidity within an interval not more than 10 h longer than for setting this equilibrium under corresponding conditions with an identical uncoated substrate.

Abstract: The invention concerns a method of measuring layer thicknesses and layer homogeneities in transparent, internally lubricant- and water-repulsion-coated containers, wherein a lens (2) focuses polychromatic light on to the internal coating (1B) of the container (1), the reflected light is detected again, coupled into a spectrometer and registered by way of a sensitive multichannel detector (7), and corresponding signals are transferred to an electronic evaluation means (8) which digitises the signals and computes the layer thickness from the interference pattern.

Abstract: Methods of fabricating and using a supporting substrate for the deposition, automated recognition and spectroscopic identification of particulate impurities in liquid or gaseous media are disclosed wherein the supporting substrate comprises a filter membrane of polymer materials of a defined pore width, wherein the surface of the filter membrane is coated with metal which in the selected wavelength range for spectroscopic identification has no spectral features and at the selected excitation wavelength absorbs no or only little of the laser energy which is radiated in, and has a very smooth structure.

Abstract: Methods of fabricating and using a supporting substrate for the deposition, automated recognition and spectroscopic identification of particulate impurities in liquid or gaseous media are disclosed wherein the supporting substrate comprises a filter membrane of polymer materials of a defined pore width, wherein the surface of the filter membrane is coated with metal which in the selected wavelength range for spectroscopic identification has no spectral features and at the selected excitation wavelength absorbs no or only little of the laser energy which is radiated in, and has a very smooth structure.

Abstract: A supporting substrate for the deposition, automated recognition and spectroscopic identification of particulate impurities in liquid or gaseous media, comprising a filter membrane of polymer materials of a defined pore width, wherein the surface of the filter membrane is coated with metal which in the selected wavelength range for spectroscopic identification has no spectral features and at the selected excitation wavelength absorbs no or only little of the laser energy which is radiated in, and has a very smooth structure.