Low Level Analysis

NNL has over 25 years' experience in radionuclide determinations for the analysis of a wide range of waste decommissioning samples. This includes the analysis of effluent samples on a quarterly and annual basis as part of the statutory ongoing monitoring program.

We pride ourselves on offering customers a professional scientific service, tailored to your individual requirements.

Sample types

NNL can analyse a wide range of samples types including:

Liquid effluents

Wet wastes- resins, sludges, oily wastes

Dry wastes- desiccants, catalysts, plastic, powders, rubber, paint, hoover bag contents, swabs

Activated components- fuel element debris, bio-shield concrete, core graphite, vessel weld steel

Contaminated components- fuel skips, pond wall concrete, gas ducts


Sample solutions are prepared by total dissolution ensuring the result is representative of the original sample submitted for analysis.

Total alpha and total beta activity analysis

We provide a range of total alpha, low and high-energy beta analysis.

Gamma emitters

Sc-46, Cr-51, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Se-75, Nb-94, Nb-95, Zr-95, Ru-103, Ru-106, Ag-108m, Ag-110m, Sb-124, Sb-125, Ba-133, Cs-134, Cs-137, Ce-144, Eu-152, Eu-154, Eu-155, Ta-182, Hg-203.

Beta/X-ray emitters

H-3, C-14, S-35, Cl-36, Ca-41, Ca-45, Fe-55, Ni-59, Ni-63, Sr-90 (& Y-90), Tc-99, I-129, Sm-151, Pm-147, Pu-241.

Alpha emitters

Am-241, Am-243, Cm-242, Cm-243/244, Np-237, Pu-238, Pu-239/240, Pu-242, Th-228, Th-229, Th-230, U-232, U-233/234, U-235/236, U-238,


Email: customers@nnl.co.uk