Liquid Scintillation Counting Vials
Glass Vials/Plastic Vials/Pico Pro Vial
PerkinElmer offers high quality glass and plastic vials. The best vial to choose is dependent on the type and volume of sample to be counted and the cocktail that will be used.
Glass vials are manufactured from low potassium glass tubing. The tube diameter and the wall thickness are very closely controlled. The uniform wall thickness contributes to excellent counting reproducibility.
■ Chemically inert: suitable for use with aggressive reagents and tissue solubilizers.
■ Good visibility: to check sample/cocktail appearance.
■ No solvent permeation: when classical LSC cocktails are used.
Choice of Caps
■ Foil-lined urea: best for airtight seal
■ Poly-cone line: best for agressive reagents (alkali and oxidizer)
■ Poly screw: basic plastic cap, no insert
Plastic vials are injection (blow) molded to exacting specifications from virgin high-density (linear) polyethylene (HDPE). Caps are recessed to assure reliable loading and transferring in automatic sample changers without skipping or jamming. Since polyethylene vials are produced from petrochemicals, they contain no measurable background and are preferred for low activity counting applications.
■ Lower background level than glass vials.
■ Higher counting efficiency than glass vials.
■ Combustible: easier waste disposal.
■ No solvent permeation with safer, high-flash point cocktails such as the ULTIMA Gold and OptiPhase HiSafe families.