Performance of nonylphenol-ethoxylates-free liquid scintillation cocktail for tritium determination in aqueous samples

  • Carmen VarlamEmail author
  • Irina Vagner
  • Denisa Faurescu


The paper evaluates the performances of nonylphenol ethoxylates free cocktail (ProSafe LT+, Meridian Biotechnologies Ltd.) for tritium measurement using liquid scintillation counting and the laboratory’s routine procedure. The optimum ratio of sample and liquid scintillation cocktail for 20 ml vial volume was investigated, choosing a ratio of 8:12 ml of sample: scintillation cocktail. Good results were obtained for linearity (investigated between 0.3 MBq l−1 and 6 Bq l−1), repeatability, and trueness, and prove its applicability both for operation and environmental monitoring of tritium at nuclear facilities.


Nonylphenol ethoxylates Scintillation cocktail Tritium measurement 



The ProSafe LT+ liquid scintillation cocktail was sent free of charge by Meridian Biotechnologies LTD (United Kingdom) to the participants of the “7th Organically Bound Tritium Workshop”, Toronto, Canada, 2018 September 24–26. This paper was prepared in connection with the work done for monitoring program of Tritium Removal Facility PESTD.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.National R&D Institute for Cryogenics and Isotopic Technologies - ICSIRm. ValceaRomania

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