The agency is looking to purchase a replacement for the MicroBeta Trilux Liquid Scintillation and Luminescence Counter (Model 1450, 6 detector) located at NIBSC. This is one of the most heavily used pieces for producing bioassay results in Biotherapeutics, from both plates and filters, and is used for ISO17025 accredited work. Included in this requirement will be delivery, training, installation and warranty.