Humboldt Nuclear Density Gauges
Special Form Certificates for Humboldt Nuclear Gauges
Certificates of Approval of Design for Special Form Radioactive Material:
For Gauges Serial Numbers less than 7000
High Energy Gamma Source –
Capsule X.8 (USA 0634 S-96 Rev 6)
Neutron Source Capsules X.1 and X.1/2 –
(USA 632 S-96 Rev 10)
For Gauges Serial Numbers greater than 7000
High Energy Gamma Source –
Capsule A3015-1 (USA/0356/S Rev 14)
Neutron Source Capsules Am1.N02
(CZ / 1009 / S-96)