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• Non-hardening
• Reusable
• Lead-free
EnviroClay in a non-hardening, reusable putty. It is readily pliable and yet has enough consistency to hold its shape after placement.
This shielding putty was developed as a replacement for the popular lead based shielding clay. The putty is manufactured under careful controls to insure that the Bismuth is evenly distributed throughout the material thus insuring that there will be no holes apparent to the radiation.
The material is in the non-soluble form of elemental bismuth (90% by weight). Its density is 3.8 g/cc or 238 lb/ft3. It will not dry out and form a powder, and is supplied in convenient size chunks for shaping.
EnviroClay requires no special tools or techniques to produce patient shields. This material permits an accurate, reproducible technique for obtaining small openings in shields molded to fit patients.
Specifications
Hydrogen Atom per cc x 1022: 3.3 x 1022
Atoms per cc x 1021 (Additive): 9.9 (Bi)
Weight % (Additive): 90 (Bi)
Temperature Limit: 110° F (45° C)
Machinability: Poor
Thermal Neutron 1/1011 Thickness: 81.2
Neutrons x 1017 n/cm2: 2.5
Gamma x 108 R: 5
Density: 3.8 g/cc (238 lbs/cu ft)
Typical Shielding Thickness (Inch): 1.0
Volume % Bismuth: 39%
Lead Equivalent Thickness (inch): 0.39
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