Table 4.

Accuracy of UV spectrophotometry.

Actual Concentration (mg/L)	Testing Concentration (mg/L)						RSD (%)	Relative Deviation (%)
	1	2	3	4	5	6
10.00	8.49	8.25	8.73	8.83	8.97	8.49	3.1	13.7
50.00	49.50	51.90	48.05	54.08	51.91	46.60	5.5	0.7
100.0	100.2	105.7	100.9	104.0	102.6	100.4	2.2	2.3

RSD: relative standard deviation.