Radiochemical Products


Lead-203 is a gamma emitting nuclide mainly used as a diagnostic agent by researchers evaluating alpha targeted therapies utilizing Pb-212.  For industrial use only, not for use in humans.


Physical Characteristics

Half-Life 51.88 hours

Form and Concentration

Chemical Form PbCl2 in 0.5 M HCl
Radioactive Concentration >30 mCi/mL*
Specific Activity >3000 Ci/g*
Radionuclidic Purity ≤ 0.2 % Pb-201, ≤ 0.1 % all others; 99.7 % total
Impurities Fe≤0.2, Cu≤0.05, Ni≤0.05, Tl≤0.05, Pb≤0.3 µg/mCi


Calibration 12:00 noon day of receipt (EST)

*Contact Radiochemical Customer Service for special orders and availability.

Ordering Information

Radiochemical Customer Service

tel: 1-800-299-3431