发明名称 |
Cryogenic apparatus |
摘要 |
The present invention provides methods and devices for freezing drops of liquid reagent solution in a cryogenic liquid. In one embodiment, the apparatus of the present invention comprises means for dispensing uniform, precisely measured drops of a liquid reagent and a rotatable carousel positioned below the dispensing means. The upper surface of the carousel has a plurality of trays each containing a cryogenic liquid, typically liquid nitrogen, for receiving the drops of liquid reagent. An alternative embodiment of the present invention comprises a tank comprising a cryogenic liquid for receiving the drops of liquid reagent. The tank has a heat source for slightly heating a portion of the cryogenic liquid such that a convection current in the cryogenic liquid is created. The convection currents in the cryogenic liquid provide mild agitation of the liquid and prevent aggregation of the frozen drops.
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申请公布号 |
US5275016(A) |
申请公布日期 |
1994.01.04 |
申请号 |
US19920873327 |
申请日期 |
1992.04.24 |
申请人 |
ABAXIS, INC. |
发明人 |
CHATTERJEE, BIKASH K.;BUHL, STEVEN N.;YU, CHI-SOU;TANG, THUY N.;SMITH, GARY L.;BHAYANI, BHASKAR;ALVARADO, ANTHONY;WONG, SWEE |
分类号 |
F25D3/10;A23L3/375;A61J3/00;A61J3/06;B01J19/06;F25C1/00;F26B5/06;G01N1/42;(IPC1-7):F25D25/02 |
主分类号 |
F25D3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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