Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1988-11-17
1992-06-09
Johnston, Jill A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
356238, 356408, 422 681, G01N 2127
Patent
active
051205076
ABSTRACT:
A reflection plate for a biochemical measuring instrument which is adapted to evaluate a biochemical value by obtaining a reflective property of a reflection surface of the reference reflection plate, obtaining a reflective property of test paper impregnated with biochemical sample and mounted on a test stick, and comparing the two reflective properties, wherein: the reflection surface of the reference reflection plate is depressed from the periphery thereof. Thereby, even though the test stick is required to be placed adjacent to the reflection surface to achieve a uniformity the optical arrangement in obtaining the two reflective properties, the contamination of the reflection surface from the sample can be prevented. Preferably, the reference reflection plate itself may be provided with a depression to defined the reflection surface at the bottom of this depression.
REFERENCES:
patent: 4035085 (1977-07-01), Seiner
patent: 4509859 (1985-04-01), Markart et al.
patent: 4780283 (1988-10-01), Meinecke et al.
Makita Shigeru
Sano Yoshihiko
Sierra George H.
Zivitz Maury
Boehringer Mannheim Corporation
Johnston Jill A.
Omron Tateisi Electronics Co.
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