BS ISO 11929-1:2019 specifies a procedure, in the field of ionizing radiation metrology, for the calculation of the "decision threshold", the "detection limit" and the "limits of the coverage interval" for a non-negative ionizing radiation measurand when counting measurements with preselection of time or counts are carried out. The measurand results from a gross count rate and a background count rate as well as from further quantities on the basis of a model of the evaluation. In particular, the measurand can be the net count rate as the difference of the gross count rate and the background count rate, or the net activity of a sample. It can also be influenced by calibration of the measuring system, by sample treatment and by other factors.

Cross References:
ISO/IEC Guide 99
JCGM 101:2008
ISO 80000-1
ISO/IEC Guide 98-3
JCGM 200:2012
ISO 3534-1
JCGM 102:2011
ISO/IEC Guide 98-3-2
ISO/IEC Guide 98-3-1
ISO 80000-10
JCGM 100:2008
JCGM 106:2012
ISO 11665 (all parts)
ISO 28218
ISO 9696
ISO 18589 (all parts)
ISO 9697
JCGM 104:2009
ISO 10703
ISO 7503 (all parts)
ISO/IEC 80000-2:2009
ISO 9698
IEC/TR 62461
ISO/IEC Guide 98-4:2012
ISO/IEC Guide 98-1:2009


All current amendments available at time of purchase are included with the purchase of this document.