Abstract: A microalgae observation apparatus includes a flow cell 40 into which a fluid containing microalgae is introduced, an excitation light source 10 configured to irradiate the flow cell 40 with excitation light, a first fluorescence detector 102A configured to detect lipid autofluorescence emitted from lipid of each of the microalgae irradiated with the excitation light, a scattered light detector 105 configured to detect light scattered from each of the microalgae, and a recording section 301 configured to time-sequentially record the intensities of the detected lipid autofluorescence and scattered light. The recording section 301 is included in, for example, a central processing unit (CPU) 300. The lipid of the microalgae is also called oil bodies. The microalgae observation apparatus may further include a display device 401 configured to display changes with time in intensity of autofluorescence emitted from the lipid of the microalgae.

Abstract: A detection device for lipids included in microalgae includes a flow cell 40 through, which a fluid containing microalgae flows; an excitation, light source 10 irradiating excitation light on the flow cell 40; and a first fluorescent light detector 102A detecting autofluorescence occurring in lipids included in microalgae irradiated with the excitation light. The lipids included in the microalgae are also called oil bodies. The detection device for lipids included in microalgae may further include a scattered light detector 105 detecting scattered light generated in the microalgae irradiated with the excitation light; and a comparison unit 301 comparing the intensify of the scattered light and the intensity of the autofluorescence occurring in the lipids.

Abstract: A particle detecting device includes: a chamber; an injection nozzle provided within the chamber; a discharge nozzle that is disposed within the chamber, opposing the injection nozzle; a detecting mechanism that illuminates a sample fluid that is sprayed from the injection nozzle and detects a particle included in the sample fluid; a pressurizing fluid pipe, connected to the chamber, for supplying a pressurizing fluid for pressurizing an interior of the chamber; and a rectifying member that rectifies the pressurizing fluid so that a flow speed distribution of a fluid between the injection nozzle and the discharge nozzle, rectified in an axial direction, is symmetrical in respect to the axial direction.

Abstract: A fluid-borne microorganism particle detecting device having a heating flow path wherein flows a liquid that includes a microorganism particle; a microwave emitting device for irradiating, with microwave radiation, the liquid that includes the microorganism particles within the heating flow path; an inspection flow path that is connected to the heating flow path; an excitation beam light source for emitting an excitation beam toward the inspection flow path; and a fluorescence detector for detecting fluorescent light emitted by microorganism particles in the inspection flow path that has been illuminated by the excitation beam.

Abstract: A particle detecting device includes: a chamber; an injection nozzle provided within the chamber; a discharge nozzle that is disposed within the chamber, opposing the injection nozzle; a detecting mechanism that illuminates a sample fluid that is sprayed from the injection nozzle and detects a particle included in the sample fluid; a pressurizing fluid pipe, connected to the chamber, for supplying a pressurizing fluid for pressurizing an interior of the chamber; and a rectifying member that rectifies the pressurizing fluid so that a flow speed distribution of a fluid between the injection nozzle and the discharge nozzle, rectified in an axial direction, is symmetrical in respect to the axial direction.

Abstract: A particle detecting device includes: a chamber; an injection nozzle provided within the chamber; a discharge nozzle that is disposed within the chamber, opposing the injection nozzle; a detecting mechanism that illuminates a sample fluid that is sprayed from the injection nozzle and detects a particle included in the sample fluid; a pressurizing fluid pipe, connected to the chamber, for supplying a pressurizing fluid for pressurizing an interior of the chamber; and a rectifying member that rectifies the pressurizing fluid so that a flow speed distribution of a fluid between the injection nozzle and the discharge nozzle, rectified in an axial direction, is symmetrical in respect to the axial direction.

Abstract: A fluid-borne microorganism particle detecting device having a heating flow path wherein flows a liquid that includes a microorganism particle; a microwave emitting device for irradiating, with microwave radiation, the liquid that includes the microorganism particles within the heating flow path; an inspection flow path that is connected to the heating flow path; an excitation beam light source for emitting an excitation beam toward the inspection flow path; and a fluorescence detector for detecting fluorescent light emitted by microorganism particles in the inspection flow path that has been illuminated by the excitation beam.

Abstract: A particle detecting device includes: a chamber; an injection nozzle provided within the chamber; a discharge nozzle that is disposed within the chamber, opposing the injection nozzle; a detecting mechanism that illuminates a sample fluid that is sprayed from the injection nozzle and detects a particle included in the sample fluid; a pressurizing fluid pipe, connected to the chamber, for supplying a pressurizing fluid for pressurizing an interior of the chamber; and a rectifying member that rectifies the pressurizing fluid so that a flow speed distribution of a fluid between the injection nozzle and the discharge nozzle, rectified in an axial direction, is symmetrical in respect to the axial direction.

Abstract: An evaluation kit for a microorganism detecting device includes an immobilized microorganism. A manufacturing method for an evaluation kit for a microorganism detecting device includes immobilizing a microorganism. An evaluating method for the microorganism detecting device includes detecting an immobilized microorganism by the microorganism detecting device. The immobilized microorganisms may be dispersed in a solvent. The solvent may be water. The immobilized microorganisms may be immobilized with an aldehyde. The aldehyde may be formaldehyde. The immobilized microorganisms emit, for example, fluorescent light.