Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1986-10-27
1989-10-24
Hill, Jr., Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
73 641, 356 39, 356442, 366273, 366274, 436 69, G01N 2159, G01N 3386
Patent
active
048760692
ABSTRACT:
Blood clotting time measuring apparatus has a temperature controlled cabinet with at least one measuring channel for receiving a measuring cell (17) containing a blood sample, the clotting time of which is to be measured. The cabinet includes clamping means (18) for retaining the measuring cell in said measuring channel. A magnetic stirrer (16, 16a) is mounted in the cabinet proximate to the measuring channel and has a metal ball (23) positionable in the measuring cell and magnetically operable with the stirrer. A photo optical turbidity detector has a light source (15) and a light detector (14) forming a photo optical path (32) containing the measuring cell. The light source receives an operating voltage which is at least half the rated voltage of said source. The light detector is connected to a measured value means (27) having two threshold value limiting means. In the measuring process, the sensing thresholds are established in accordance with the signal derived from the photo optical path prior to clotting to improve the accuracy of clotting time measurement.
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Cambosco Order Book No. 200, Cambosco Scientific Co., Inc., Boston, Mass., 1965, p. 20.
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