Jasco Corporation

Nippondenso Co., Ltd.

Morinaga Co. Ltd.

Japan Spectroscopic Co., Ltd.

Nihon Bunko Kogyo Kabushiki Kaisha

Akio Wada

Mitsuo Watanabe

Masayuki Watanabe

Masashi Nishimoto

Muneo Saito

Yoshikazu Yuki

Hisashi Masago

Takehito Mizutani

Kiyoharu Kutsuna

Kenkichi Sugiyama

Yoshiro Kondo

Tomoyuki Fukazawa

Fumiko Nakeuchi

Seiji Nishizawa

Katsuji Hasegawa

Takahiko Takenouchi

Kazuhisa Hayashi

Kazunori Ebisawa

A polarizing monochromator comprising a uniaxial birefringent crystal prism, the prism has the geometry of a triangular block having a triangular base, a face including a side of the hypotenuse is an input-output face, where light enters and exits, and a face including the longer side of the right angle is a reflection face, the optic axis of the prism is perpendicular to the base of the prism, the angle of the input-output face of the prism with respect to light coming from a collimator optical system is determined in such a manner that ordinary light and extraordinary light exit from the input-output face of the prism in opposite directions with respect to an optical axis connecting the collimator optical system and the prism, and a light-collecting optical system is disposed to collect either extraordinary light or ordinary light exiting from the input-output face of the prism.

Polarizing monochromator

A concentration correcting apparatus comprising a correction coefficient calculating means and a correcting means is shown and described. The correction coefficient calculating means calculates a correction coefficient for correcting the concentration of the material when the actual density of the medium at the measurement of the material is calculated in terms of the density of the medium under the reference temperature and pressure, from the results of the temperature measuring means and the pressure measuring means. The correcting means corrects the results of the material measuring means to a concentration under the reference temperature and pressure on the basis of the correction coefficient. The measure value of the material in the medium under constant temperature and depressure is virtually calculated by correcting the measured value by using the correction coefficient while calculating the volume of the medium which is regarded as a parameter of a temperature and a pressure in terms of a volume under the constant temperature and pressure. It is therefore possible to calculate the concentration per unit weight under constant conditions even if the temperature and the pressure are varied at the time of measurement.

Method and apparatus for correcting concentration

A method of analyzing a sample solution comprises the steps of allowing the sample solution to drip onto a sample retaining means, depositing a solute of the sample solution by evaporating a solvent thereof, irradiating infrared radiation onto this solute, and measuring the intensity of the infrared radiation which is reflected by the solute and the sample retaining means disposed under the solute so as to obtained an infrared spectrum. An apparatus for preparing a sample solution is provided for carrying out the above-described method. In this apparatus, the sample retaining means is moved so that a layer of solute which corresponds to each droplet of sample solution is continuously formed on the sample retaining means.

Apparatus for preparing sample solution for infrared spectrophotometer

An apparatus for analyzing a sample with a supercritical fluid includes a fluid container containing as an extraction solvent a fluid obtained by compressing and liquefying a substance which is a gas at ambient temperature and atmospheric pressure. A pump is provided for drawing the fluid from its container through a suction line and delivering it through a delivery line, while the heads of the pump are cooled by a cooling device. An extraction mechanism is provided for bringing the fluid in a supercritical state into contact with the sample to be analyzed and extracting a specific component or components from the sample. A trapping mechanism is provided downstream of the extraction mechanism for collecting the extracted component or components from the fluid. An analyzing mechanism can be connected to the trapping mechanism by changeover valves for analyzing the collected component or components.

Apparatus for analyzing solid sample with supercritical fluid

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Hachioji, Japan

Akio Wada