For bacterial culture from untreated heads, tonsillae were removed aseptically but singed heads were washed in Buffered Pepton Water and a sample of water taken for culture.
In another development involving E. coli, the State Health Department Thursday advised residents of Schuylerville, N.Y., about 40 miles north of Albany, to boil their tap water after a sample of the town's drinking water tested positive for the bacteria.
Since local water systems test for atrazine as infrequently as once a year, the E.P.A. has required that the companies manufacturing the chemical, primarily Syngenta, monitor the drinking water of a sample of towns — as many as 154 communities — as often as once a week.
To determine the water quality, a sample of microalgae culture was centrifuged (at 4000g for 10 min) and the supernatant filtered through a 0.45 μm membrane.
The amount of labelled food in the fly was calculated from a standard curve made by serial dilution in water of a sample of blue food.
A kidney sample from a naturally ER-infected chicken was used as a positive control, and ultra-pure water and a sample of normal porcine synovial membrane were used as negative controls.
The value of K was determined as the amount of water absorbed with a sample of unit mass for 1 h.
defer.add img); Check the fluoride levels in your toddler's drinking water, or bring a sample of it to the dentist for testing.
He sent a tar ball, a water column sample, and a sample of the diluted bitumen taken on the second day of the spill to ACT laboratories in Alabama, where they were analyzed by chemist Robert Naman.
Most pet stores will allow for free water tests if you bring in a sample of your aquarium water.
