3.1.3.B8 25 - half-life 9.6 h 732910 3.1.3.B8 25 - half-live: 9.6 hours 732910 3.1.3.B8 40 - half-life 5.3 h 732910 3.1.3.B8 40 - half-live: 5.3 hours 732910 3.1.3.B8 60 - 28% activity retained 732910 3.1.3.B8 60 - half-life: 120 h 708933 3.1.3.B8 70 - half-life: 2.8 h 708933