International Isotopes Inc.

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Cobalt-57

Physical Characteristics
Half Life: 271.8 Days 
Form and Concentration
Chemical Form: CoCl2 in 0.1 m HCL (Cobaltous Chloride) 
Radioactivity Concentration: >100 mCi/ml
(More dilute concentrations are available upon request)
Specific Activity: >6000 mCi/mg of Cobalt 
Radionuclidic Purity: >99.9%; Combined Co56, Co58, Co60 is < 0.08% 
Packaging, Shipping, Pricing
Calibration: 12:00 noon MST day of shipment 
Shipment Availability: Daily, Mon – Fri 
Packaging: Per Customer Request 
Pricing: Per Milicurie