-	General
	-	Order
	-	Delivery
	-	Costs
	-	Handling
	-	Technical information
	-	Activity standards in the form of solution
	-	Activity standards in the form of solid sources
	-	Thorium- and Uranium- activity standards
	-	Radon-in-gas activity standards

Nuclide	Maximum permissible levels in kBq	Nuclide	Maximum permissible levels in kBq	Nuclide	Maximum permissible levels in kBq
H-3	1000000	Sr-90	10	Pm-147	10000
Be-7	10000	Nb-93m	10000	Eu-152	1000
C-14	10000	Mo-99	1000	Ir-192	10
Na-22	1000	Ru-103	1000	Ta-182	10
P-32	100	Ru-106	100	Hg-203	100
S-35	100000	Cd-109	1000	Tl-204	10
Cr-51	10000	Ag-110m	1000	Bi-207	1000
Mn-54	1000	Sn-113	10000	Pb-210	10
Fe-55	1000	Te-123m	10000	Ra-226	10
Co-56	100	Sb-124	1000	Rn-222	100000
Co-57	1000	Sb-125	1000	Th-230	10
Co-58	1000	I-125	1000	Th-232	10
Fe-59	1000	I-131	1000	Th-232sec	1
Co-60	100	Ba-133	1000	Th-nat	1.16*
Zn-65	1000	Xe-133	10	Am-241	10
Se-75	1000	Cs-134	10	U-nat	10**
Kr-85	10	Cs-137	10
Sr-85	1000	Ce-139	1000
Y-88	1000	Ce-141	10000
Sr-89	1000	Ce-144	100

*	This value corresponds to the total activity of the isotopes present in thorium activity standards of the PTB: Th-232sec and Th-230.
**	This value corresponds to the total activity of the isotopes present in uranium activity standards of the PTB: U-238, U-234 and U-235.