Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1978-12-12
1980-11-18
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356427, G01K 1506
Patent
active
042347998
ABSTRACT:
A high density liquid is used to simultaneously transfer a liquid sample and a liquid reagent from antechambers formed in a centrifuge rotor to a transmissive measurement chamber formed in a radially outer region of the same rotor. The antechambers for the sample and the reagent and a reservoir chamber for the high density liquid are all elongated radially of the rotor and in fluidic connection through the radially outermost ends of the respective chambers. First the high density liquid is introduced into the antechambers so as to occupy a radially outer portion of each chamber, and then the sample and the reagent are introduced into the respective antechambers through their radially innermost ends. Thereafter the sample and the reagent are forced to flow out of the respective antechambers to enter the measurement chamber by additionally introducing the high density liquid into the reservoir chamber while the rotor is rotating.
REFERENCES:
patent: 3555284 (1971-01-01), Anderson
patent: 3586484 (1971-06-01), Anderson
patent: 3771878 (1973-11-01), Molloy et al.
patent: 4055076 (1977-10-01), Tropea
Hitachi Koki Company Limited
Matsumoto Tetsuo
Nelms David C.
Okumura Eiko
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