The Norwegian Institute of Marine Research shall replace 2 of its 3 HPGe-detectors and would like tenders for 2 HPGe-detectors with electrical cooling systems. The instruments shall be used for gamma-spectroscopic analyses of marine environment samples (sediments, seawater and marine organisms) and they must be tailor-made for this purpose. 1 detector shall be optimised for gamma-spectroscopic analyses of samples in Marinelli-geometry and the other detector shall be optimised for analyses of small sample sizes such as cross sections of sediment cores. The latter detector shall also be used for lead-210 dating of sediment cores.