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090			_aB-8744
245	1	0	_aComparison of beach bacterial water quality indicator measurement methods
490	0		_vEnvironmental Monitoring and Assessment, 38(5), p.1183-1188, 2004
520	3		_aThree methods (membrane filtration, multiple tube fermentation, and chromogenic substrate technology kits manufactured by IDEXX Laboratories, Inc.)are routinely used to measure indicator bacteria for beach water quality. To assess comparability of these methods, quantify withinlaboratory variability for each method, and place that variability into context of variability among laboratories using the same method, 22 southern California laboratories participated in a series of intercalibration exercises. Each laboratory processed three to five replicates from thirteen samples, with total coliforms, fecal coliforms or enterococci measured depending on the sample. Results were generally comparable among methods, though membrane filtration appeared to underestimate the other two methods for fecal coliforms, possibly due to clumping. Variability was greatest for the multiple tube fermentation method. For all three methods, within laboratory variability was greater than among laboratories variability.
650	1	4	_aMICROBIOLOGY
650	1	4	_aINTERCALIBRATION
650	1	4	_aVARIABILITY
650	1	4	_aBACTERIAL INDICATORS
650	1	4	_aBEACH WATER QUALITY
700	1	2	_aNoble, R.T.
700	1	2	_aWeisberg, S.B.
700	1	2	_aLeecaster, M.K.
700	1	2	_aMcgee, C.D.
700	1	2	_aRitter, K.
700	1	2	_aWalker, K.O.
700	1	2	_aVainik, P.M.
856	4	0	_uhttps://drive.google.com/file/d/11OGzRlLtKS3zAlTo_DXIHe6LI-oGlXiM/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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