Abstract: Provided is a mechanism for connecting columns and needles, including: a base member 60 on which needles 61a and 61b with their tips directed upward are provided; and a column rack 10 having column holders for holding columns 10a and 10b in an upright position while allowing all upward shift of the columns, with an opening provided below each column holder. With the needles 61a and 61b positioned directly below the openings, the base member 60 is elevated until its upper surface comes in contact with the bottom of the column rack 10, whereby the needles 61a and 61b are inserted through the openings into the columns 20a and 20b. When the base member 60 is in contact with the column rack 10, the columns 20a and 20b are pushed by the needles 61a and 61b to a higher position within the column rack 10 than their original position.

Abstract: A gas-blowing liquid sample infusing device includes a sample introducing tube 17 made from a liquid-sample inner tube 40 and a nebulizing-gas outer tube 41 for nebulizing and supplying a liquid sample, and an exhaust sealing tube 18 provided on the circumference of the sample introducing tube 17, and a cushion member 43 that is mounted on the opening of a sample container 19 (the body of an infusion container 21), that allows the sample introducing tube 17 to pass through and has a contact surface for contacting the lower end of the exhaust sealing tube 18, and an engaging member (lid) 20 that includes a cushion admitting concave part 42 in which an engaging part 44 that is mounted on the opening of the sample container 19 and prevents the upward movement of the cushion member 43 is provided on the lateral surface of the inner circumference.

Abstract: A gas-blowing liquid sample infusing device includes a sample introducing tube 17 made from a liquid-sample inner tube 40 and a nebulizing-gas outer tube 41 for nebulizing and supplying a liquid sample, and an exhaust sealing tube 18 provided on the circumference of the sample introducing tube 17, and a cushion member 43 that is mounted on the opening of a sample container 19 (the body of an infusion container 21), that allows the sample introducing tube 17 to pass through and has a contact surface for contacting the lower end of the exhaust sealing tube 18, and an engaging member (lid) 20 that includes a cushion admitting concave part 42 in which an engaging part 44 that is mounted on the opening of the sample container 19 and prevents the upward movement of the cushion member 43 is provided on the lateral surface of the inner circumference.

Abstract: Light emitted from a light casting unit 1 including an LED as its light source is cast into a sample cell 2, and a photodetector 3 is placed at a position where the resultant passing light can be detected. The LED is driven to blink, and a data extracting section 71 extracts data obtained in a period in which the LED is turned on, as data (absorbance data) in which absorption of light by the sample solution is reflected. Moreover, in the case where a fluorescent component is contained in the sample solution, fluorescent light is emitted by the cast light serving as excitation light. Even after the excitation light ceases, the emission of the fluorescent light continues for a short time, and hence the data extracting section 71 extracts data obtained immediately after the LED is turned off, as data (fluorescence data) in which the fluorescent light is reflected.

Abstract: Provided is an optical analyzer for performing a feedback control on the amount of light emitted from an LED as a light source, in which the configuration of an optical system is made simple and the degree of freedom in optical system arrangement is secured. An optical member 2 for focusing most of light while discharging part of the light as unfocused light is provided on an optical path from a light casting unit 1 to a sample cell 3. The optical member 2 can be achieved with a simple configuration, for example, two ball lenses spaced apart by a predetermined distance from each other. The light focused by the optical member 2 is cast as measurement light into the sample cell 3. Meanwhile, a second photodetector 5 is arranged at a position where the unfocused light reaches.

Abstract: Provided is a mechanism for connecting columns and needles, including: a base member 60 on which needles 61a and 61b with their tips directed upward are provided; and a column rack 10 having column holders for holding columns 10a and 10b in an upright position while allowing all upward shift of the columns, with an opening provided below each column holder. With the needles 61a and 61b positioned directly below the openings, the base member 60 is elevated until its upper surface comes in contact with the bottom of the column rack 10, whereby the needles 61a and 61b are inserted through the openings into the columns 20a and 20b. When the base member 60 is in contact with the column rack 10, the columns 20a and 20b are pushed by the needles 61a and 61b to a higher position within the column rack 10 than their original position.

Abstract: A liquid leakage between a needle and a needle port is prevented. To this end, a guide section, a passage section, and a tapered section are provided in an in-port path of a needle port. The guide section has an inside diameter larger than the outside diameter of a body of a needle. The passage section has an inside diameter smaller than the outside diameter of the body of the needle and larger than the tip diameter of a tapered portion of the needle. The tapered section connects the guide section and the passage section. The taper angle ?2 of the tapered section is set to be larger than the taper angle ?1 of the tapered portion of the needle, and the width w of the tapered section is set to be smaller than half the difference between the outside diameter of the body and the tip diameter of the needle.

Abstract: A needle washing mechanism allowing the selection of an appropriate needle cleaning liquid without having to take volatility into consideration is presented. The needle washing mechanism has: needles standing on a base side by side and each of which has a path inside thereof through which a liquid passes; washing ports having washing holes including openings; and a needle cleaning liquid supply means for supplying a needle cleaning liquid to each of the washing holes, and includes cap sections, which are provided on the outer circumferential surface of the needles, for closing the openings of the washing holes when the needles are inserted into the washing holes. The washing ports are biased toward the openings by means of biasing means. In addition, disposal passages for discharging the needle cleaning liquid from the washing holes are provided in the washing ports.

Abstract: A fractionating and refining device includes a solution sending flow path for supplying a solution, including a fractionated target component, a gas supply flow path, a collecting vessel, a warming mechanism for warming the collecting vessel, and a probe formed by integrating tip end portions of the solution sending flow path and the gas supply flow path with each other. A lid of the vessel includes a solution inlet to which the tip end portion of the solution sending flow path is connected, gas inlets to which the tip end portion of the gas supply flow path is connected, and gas discharge ports connecting an inside and an outside of a vessel main body of the vessel.

Abstract: The present invention aims at providing a preparative separation/purification system for vaporizing an eluate in a short period of time, while enhancing the efficiency of collecting the target substance by accelerating the initiation of collecting the eluate.

Abstract: Provided is a gas-blowing vaporizing and drying device for blowing gas at a solution containing a target component, and thus nebulizing the solution to promote vaporization of the solvent while dropping the solution into the collection container, in which contamination does not occur even if different solutes are successively powderized. In the gas-blowing vaporizing and drying device according to the present invention, a cap 20 to be fitted to the upper opening of a collection container body 19 includes: a solution-introducing tube 20A for introducing a solution supplied from a passage 14, into a collection container 21; a gas-introducing tube 20B for introducing a gas supplied from a passage 22, into the collection container 21; and an exhaust port 20C. Further, the exhaust port 20C includes a filter 20D for preventing the powderized solute from passing therethrough.

Abstract: There are provided a vacuum pump self-diagnosis method, a vacuum pump self-diagnosis system, a vacuum pump central monitoring system capable of making self-diagnosis of a dry vacuum pump. A vacuum pump self-diagnosis method decides the occurrence of failure and generates an alarm when a predetermined alarm set value is exceeded by an integrated value or an average value of a current of a motor for rotating a rotor of said vacuum pump. In a vacuum pump self-diagnosis system for making self-diagnosis of a vacuum pump which comprises a casing and a rotor rotatably arranged in the casing for sucking and discharging a gas through rotations of the rotor, the rotor comprises a plurality of stages and a pressure sensor is provided between the rotor stages.

Abstract: In a semiconductor device having a pn-junction diode structure that includes anode diffusion region including edge area, anode electrode on anode diffusion region, and insulator film on edge area of anode diffusion region, the area of anode electrode above anode diffusion region with insulator film interposed between anode electrode and anode diffusion region is narrower than the area of insulator film on edge area of anode diffusion region.

Abstract: Provided is a gas-blowing vaporizing and drying device, which includes: a sample tube in the form of a double tube including an inner tube for a solution and an outer tube for a gas, the inner tube protruding from one end of the outer tube by length L; and a collection container including a container body and a lid provided with a protrusion sleeve tube, the protrusion sleeve tube including a coupling portion at an end to be located outside the container body and a sleeve portion of a length equal to or longer than L having an open end to be located inside the container body, the coupling portion being designed to be coupled to the aforementioned one end of the outer tube in an air-tight manner.

Abstract: In a preparative separation-purification system for passing a solution containing a target component through a trap column 21 to capture the target component in the column 21, and for subsequently passing an eluting solvent through the column 21 to elute the captured component and collect it in a container, an outlet aperture 27 of the column 21 has a tapered shape whose sectional area is largest on a plane facing an inner space of the column 21 and decreases in the flowing direction of the liquid. A filter 26 for preventing deposition of the target component is also provided at the boundary between the inner space of the column 21 and a passage for discharging liquid from the inner space. By this configuration, clogging of the passage at the outlet end of the column 21 due to deposition of the target component is prevented.

Abstract: A needle washing mechanism allowing the selection of an appropriate needle cleaning liquid without having to take volatility into consideration is presented. The needle washing mechanism has: needles standing on a base side by side and each of which has a path inside thereof through which a liquid passes; washing ports having washing holes including openings; and a needle cleaning liquid supply means for supplying a needle cleaning liquid to each of the washing holes, and includes cap sections, which are provided on the outer circumferential surface of the needles, for closing the openings of the washing holes when the needles are inserted into the washing holes. The washing ports are biased toward the openings by means of biasing means. In addition, disposal passages for discharging the needle cleaning liquid from the washing holes are provided in the washing ports.

Abstract: An eluate-collecting mechanism is constructed, including: a collection passage and having an inlet to be inserted into and removed from the upper end of a trap column and an outlet to be inserted into and removed from a collection container; a support member for supporting the collection passage in such a manner that the inlet is fixed while the outlet is vertically movable; a contact part provided at the outlet to come in contact with the collection container when the outlet is inserted into this container; and an elastic member for pressing the outlet downward so that a tip of the outlet is lower than the tip of the inlet, the elastic member being compressed when the support member and the collection container are brought closer to each other while keeping the contact part in contact with the container.

Abstract: In a preparative separation-purification system for passing a solution containing a target component through a trap column to capture the target component in the column, and for subsequently passing an eluting solvent through the column to elute the captured component and collect it in a container, a dilution passage is merged with a collection passage for sending an eluate from the outlet end of the trap column to the collection container, and a diluting liquid is intermittently introduced through the dilution passage into the collection passage. The diluting liquid lowers the concentration of the target component in the eluate and impedes the deposition of the target component. Thus, clogging of the passage due to the deposition of the target component eluted from the trap column is effectively prevented.

Abstract: A controlling apparatus for reducing the variation of the liquid supply of a reciprocating pump is presented. The controlling apparatus for a reciprocating pump has a pump housing; a moving component for reciprocating in the pump housing so as to draw a liquid into the pump housing and discharge the liquid from the pump housing; a driving source for reciprocating the moving component; a setting unit for setting a target liquid supply amount or a target amount which corresponds thereto; a unit amount memory unit for storing a discharge amount of the reciprocating pump per a reciprocal movement of the moving component or a unit amount which is a value corresponding to the discharge amount; a computation unit for computing the smallest multiple number of the unit amount which is equal to or larger than the target amount; and a motor controller for controlling the driving source.

Abstract: A liquid leakage between a needle and a needle port is prevented. To this end, a guide section, a passage section, and a tapered section are provided in an in-port path of a needle port. The guide section has an inside diameter larger than the outside diameter of a body of a needle. The passage section has an inside diameter smaller than the outside diameter of the body of the needle and larger than the tip diameter of a tapered portion of the needle. The tapered section connects the guide section and the passage section. The taper angle ?2 of the tapered section is set to be larger than the taper angle ?1 of the tapered portion of the needle, and the width w of the tapered section is set to be smaller than half the difference between the outside diameter of the body and the tip diameter of the needle.