Table 3.

Counter background of selected scintillation cocktails at various measurement times.

[Bq]	1  min	2  min	10  min	60  min
ROTISZINT	0.48 ± 0.16 (0.96)	0.45 ± 0.12 (0.81)	0.44 ± 0.05 (0.59)	0.45 ± 0.04 (0.57)
AquaLight+	0.49 ± 0.16 (0.97)	0.45 ± 0.14 (0.87)	0.49 ± 0.04 (0.61)	0.50 ± 0.02 (0.56)
Ultima Gold XR	0.73 ± 2.80 (9.31)	0.39 ± 0.11 (0.72)	0.45 ± 0.06 (0.63)	0.45 ± 0.02 (0.51)

Performance is presented by the average Becquerel of the counter background values and respective standard deviation. The resulting minimum detection limit (MDL), calculated as counter (background plus three times standard deviation is given in parentheses).