Optics: measuring and testing – Sample – specimen – or standard holder or support – Fluid containers
Patent
1987-11-04
1989-04-18
McGraw, Vincent P.
Optics: measuring and testing
Sample, specimen, or standard holder or support
Fluid containers
250576, G01N 2105
Patent
active
048231681
ABSTRACT:
A flow cell for a photometer, which comprises a cell body integrated from a pair of cell body members by joining, at least one of which is provided with a linear groove on the joining surface of the cell body member from one end to another to the full length, as exposed to the joining surface, the groove playing both roles of a liquid sample passage and a detecting light path by the integration of the cell body members, and is further provided with a liquid sample inlet passage at a position near one end of the groove and a liquid sample outlet passage at a position near the other end of the groove, both passages being communicated with the grooves, the linear groove being provided with a light reflecting layer to the full length of the linear groove, and a pair of light transmission window members joined with the flow cell body at both ends on the groove-open sides thereof is provided, where polishing of the grooves is readily carried out and random reflection of light or absorption of light due to poor reflection is reduced, and the turbulent flow of a liquid sample and generation of noise are suppressed.
REFERENCES:
patent: 3751173 (1973-08-01), Sanz et al.
patent: 4575424 (1986-03-01), Allington et al.
patent: 4643570 (1987-02-01), Machler et al.
Kamahori Masao
Miura Junkichi
Miyagi Hiroyuki
Taki Mamoru
Watanabe Yoshio
Hitachi , Ltd.
McGraw Vincent P.
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