Hitachi-high-technologies Corporation

Shintaro Kubo

Shoji Tomida

Masahito Ito

Hiroyuki Noda

Hideyuki Akiyama

Hiroshi Sasaki

Ryoji Inaba

Motohiro Yamazaki

Masao Kamahori

Yusuke Goto

Kiyotoshi Mori

Yu Ishige

Takashi Gomi

Mitsuhiko Ueda

Kosaku Toyosaki

Yoshimi Kasai

Katsunobu Hama

To prevent lowering of sensitivity of a flow cell based on total reflection of light at an outer face of a glass capillary at a joint part with a pipe, the flow cell includes, at joint parts with a pipeto introduce solution to a glass capillaryand with a pipe to discharge solution from the capillary, an inorganic material layerthat reflects measurement light to modify the outer face of the glass capillary as well as a reinforcement layerto modify the surface thereof.

Flow cell and liquid analyzer

A pipe connection joint which is repeatedly usable when an analysis column is replaced with another in a liquid chromatographic device. To this end, an elastic body is built into a compression screw for inserting a pipe passed through a ferrule into the analysis column to thereby axially movably support the pipe, and a pipe clamp is secured in advance at a predetermined position of the pipe. A distance between the ferrule and the pipe clamp changes on the basis of the length of a portion of the pipe sticking out from the ferrule and the pressing force of the elastic body applied to the pipe.

Pipe connection joint

Column oven for liquid chromatograph analyzer

Organizer for liquid chromatograph analyzer

Detector for liquid chromatograph analyzer

Auto sampler for liquid chromatograph analyzer

Liquid chromatograph analyzer

Pump for liquid chromatograph analyzer

Detection sensitivity is improved by increasing the amount of light of beams that irradiate a sample cell without causing saturation of a detector with ultraviolet beams or visible beams. This spectrophotometer includes a sample cell, which stores a sample to be measured, a visible light source and an ultraviolet light source each for supplying an incident beam that enters the sample, a spectroscope, which disperses a beam that has passed through the sample, an optical detector, which detects beams dispersed from such beam (spectrum), and a dichroic element which reflects or transmits ultraviolet beams from the ultraviolet light source and which transmits or reflects visible beams from the visible light source. Optics are configured such that ultraviolet beams and visible beams that have passed through or have been reflected by the dichroic element enter the sample cell.

Spectrophotometer and liquid chromatography system

Growing community of inventors

Hitachinaka, Japan

Shintaro Kubo