The oxidative absorption of hydrogen sulfide (H2S) into a solution of ferric chelate of trans-1,2 diaminocyclohexanetetraacetate (CDTA) was studied in a counter-current laboratory column randomly packed with 15 mm plastic Ralu rings.
As chief of the counter-terrorism laboratory at the Arkansas Department of Health — one of 62 such federally funded labs in the country — he heads two dozen chemists who are on constant alert for the release of pestilence or poisons in the United States.
The day after the routine tests showed some contamination, the report said, Ms. Cheng borrowed a Geiger counter from the laboratory and scanned her apartment, where she told investigators that one spot on one pillow was "very hot".
To counter sterile white laboratory walls, for example, you might want to add a red or yellow object to your desk, or hang paintings around the room that include those colors.
The arenas were allowed to dry for several days on a laboratory counter.
Mammary bud epithelial cell nuclei and apoptotic cells within a 100 square (1 mm × 1 mm) grid were counted manually on a laboratory counter (Denominator, Woodbury, CT, USA).
The arenas were held on a laboratory counter at room temperature, and beetles were evaluated for knockdown (number of beetles on their dorsal side and unable to flip over) every 15 min for 3 h, and at 19, 20, and 24 h post-exposure.
The existence of an absolute limit, c, on the speed of particles is demonstrated by a measurement of the times of flight of cosmic-ray muons between scintillation counters in the laboratory.
Peripheral blood was collected from the retro-orbital sinus and nucleated cells were counted on a MS9-5 Hematology Counter (Melet Schloesing Laboratories, Osny, France).
The Hb concentration was determined from each blood sample in a masked fashion, using both a blood gas analyzer and a conventional laboratory coulter counter.
