TABLE 2.

Recovery of L. pneumophila by immunomagnetic purification from distilled and potable water (CFU) and cooling tower water (number of copies)

Sample	CFU or no. of copies		Recovery (%)
	Supernatant	Bacterium-beads
Distilled water	80 × 106	12 × 107	60.0
	70 × 106	12 × 107	63.0
	40 × 106	40 × 106	71.0
	840	1,800	68.2
	105	120	53.3
	870	1,200	58.0
	80	70	46.7
	8	12	58.8
Potable water	294	230	43.9
	1,260	1,600	55.9
	1,260	1,600	55.9
	126	160	55.9
	126	160	55.9
	4	12	74.1
	2	2	48.8
	105	120	53.3
	8	12	58.8
	80	70	46.7
	46	28	37.7
	40 × 107	40 × 107	50.0
	40 × 106	40 × 106	50.0
	1,050	280	21.0
	105	28	21.0
	11	2	16.1
Cooling tower water	462.2	3,778.8	89.1
	22,501.6	6,734.7	23.0
	951.7	452.9	32.2
	184.2	15.6	7.8
	17,3975.9	14,626.3	7.7
	418.7	1,254.7	75.0
	5,069.8	1,053.4	17.2