Instrument: Riso Laboratory Anti-coincidence Beta Counters

Instrument Short Name: Riso Beta Counter
Instrument Description:

Low-level beta detectors manufactured by Riso (now Nutech) in Denmark. These instruments accept samples that can be mounted on a 25mm filter holder. These detectors have very low backgrounds, 0.17 counts per minute, and can have counting efficiencies as high as 55%. 

PI supplied instrument name: RISO beta counter
Dataset-specific description

Thorium counts were made using a low level RISO beta counter within 2 weeks of sample collection.