LIQUID SCINTILLATORS
The versatility of liquid scintillation detectors provides an excellent means of approaching many problems in the detection of nuclear radiation. For many years, we have provided the greatest variety of liquid scintillators available from any commercial source. The range includes standard liquid scintillators for pulse shape discrimination applications, for internal sample counting or external detection of radiation, and loaded liquids for neutron and gamma detection. Liquid scintillators can be supplied ready for immediate use encapsulated at the factory in sealed aluminum or glass cells in a variety of types made to the customer's required dimensions.  Liquid scintillators in liter quantities are also supplied in bottles or drums sealed under inert gas. All liquid scintillators should be stored in clean, dry sealed containers under an atmosphere of inert gas. Materials suitable for construction of containers in contact with liquid scintillators are glass, tin-plated steel, chrome steel, stainless steel, aluminum, indium and Teflon®. The stability of each liquid in the presence of other materials should be determined before a large amount of liquid is committed. After being transferred to a cell or tank the scintillator should be deoxygenated by sparging with pure nitrogen or argon for a duration of time proportional to the cell size immediately before sealing in order to achieve excellent PSD performance. Complete detector assemblies are also available which incorporate an aluminum cell and a PMT in a light-tight metal housing.