IEEE N42.15-1997

1 Overview
    1.1 Scope
    1.2 Purpose
    1.3 Word usage
2 References
3 Definitions
4 Standards and check sources
    4.1 Radioactivity standard material
    4.2 Check sources
    4.3 Background sources (unquenched blank)
    4.4 Symbols
5 Materials
    5.1 Solvent
    5.2 Organic-scintillator solutes
    5.3 Radioactive material
    5.4 Sample container
    5.5 Purging gas
6 Description of check sources
    6.1 Check sources
    6.2 Expiration date of check source
7 Operations and tests
    7.1 General
    7.2 Test procedures
8 Precautions
    8.1 Organic-scintillator solute purity
    8.2 Background activity from low-potassium glass
    8.3 Small-vial check sources
    8.4 Sample preparation
    8.5 Instrument check sources
    8.6 Measurement of radioactivity
    8.7 Abnormal observations of check source count rate
    8.8 Abnormal observations of background check source
          count rate
    8.9 Automated performance checks
Annex A (informative) Physical properties of 2.5-
        diphenyloxazole (PPO)
Annex B (informative) Physical properties of 1.4-bis-2-
        (5-phenyloxazolyl)-benzene (POPOP)
Annex C (informative) Physical properties of 1.4-bis-2-
        (4-methyl-5-phenyloxazolyl)-benzene (dimethyl POPOP)
Annex D (informative) Physical properties of p-bis-
        (O-methylstyryl)-benzene (bis MSB)
Annex E (informative) Requirements for toluene acceptance
Annex F (informative) Statistical tests of reproducibility -
        the X2 test and other criteria
Annex G (informative) Performance monitoring log for liquid-
        scintillation counting
Annex H (informative) Bibliography