Disk Source Set

RADIOACTIVE SOURCES

The RSS2 source set is used for determining the resolving time of GM counters. It consists of 3 half-disks: 2 contain Tl-204 and 1 is left blank (contains no material).

Each disk has an uncertainty of ± 20% of the labeled activity. Activities will not exceed the U.S. NRC Exempt Quantity limit. Not available for calibration