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LOCAD-PTS Handheld Microorganism Detector
LOCAD-PTS (Lab-On-a-Chip Application Development–Portable Test System) is a hand-held device that can detect the presence of bacteria or fungi in record time. The device was tested aboard the International Space Station for the first time last month.
(LOCAD-PTS, handheld biological laboratory)
The standard method of culturing suspect bacteria is far more time-consuming. Typically, the investigator must press a square of solid gel growth medium to a surface for a few moments, put it back in its package, and then let the sample incubate for a few days.
LOCAD-PTS, on the other hand, takes only a few minutes. The investigator takes a sterile dry swab (similar to a Q-tip) and rubs it on the surface. Then, ultra-clean water is flushed through the swab; a few drops of the liquid is dispensed into the LOCAD-PTS instrument.
(LOCAD-PTS reader [left] and swabbing unit [right])
Microorganisms can affect the health of both astronauts and spacecraft. (Yes, spacecraft can get "sick" from microorganisms; see Unwanted Life Forms Abound In Sick Spacecraft for details.) According to Norman Wainwright of the Charles River Laboratories in Charleston, SC:
"The ability to monitor microorganisms would be especially important on long space voyages, not only to check the health of astronauts but also to monitor electronics and structural materials, which can be corroded or otherwise damaged by certain fungi and bacteria," says Wainwright. LOCAD-PTS is designed so that "astronauts can do the analysis onboard with no need to return samples to laboratories on Earth."
This little wonder is very similar to a device described by sf author Greg Bear in his new novel Quantico. Do terrorists have engineered bio-weapons? Better use the WAGD to find out:
She had yet to bring out her WAGD - pronounced Wag-Dee, for Wright Assay Germ Detector - a biohazard analyzer the size and shape of a large magic marker. She carried two in her coat pocket...
(Read more about the WAGD germ detector with excerpts from an interview with Greg Bear)
This device is not to be confused with the famous Star Trek tricorder, of which NASA has several prototypes:
Read more at Science@NASA.Scroll down for more stories in the same category. (Story submitted 5/13/2007)
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