Cross-contamination isolator
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United States of America Patent
Stats
-
Apr 22, 1980
Grant Date -
N/A
app pub date -
Jul 19, 1978
filing date -
Jul 19, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A liquid isolator to prevent cross-contamination in the supply of liquid to and between animal racks. The isolator comprises cylindrical concentric tubes arranged to form a liquid storage chamber, a standpipe in the chamber, and a liquid entry tube within the standpipe. Near their upper ends, a liquid transfer port is provided between the standpipe chamber and the liquid storage chamber. An air lock is formed between the liquid transfer port and the level of any liquid in the storage chamber. The air lock isolates liquid in the standpipe chamber from the liquid in the storage chamber. Check valves are also provided in a liquid inlet at the top of the isolator and a liquid outlet at the bottom of the isolator, thus to prevent back flow through the isolator.
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