20mL Scintillation Vial: Scintillation counting, gamma counting, chromatography, sample storage and culturing Because of its leak-tight cap it is also commonly used to store and transport histological specimens in 10% formalin Provides high degree of resistance to organic solvents and sufficient translucence so that reagent levels can be easily seen Unique thread design of closure permits vial to be sealed tight with easy 1/4 turn and with minimum pressure 6.5mL Scintillation Vial: Securely sealed by simply snapping caps on Cap is conveniently removed with easy 1/4 turn to left 4mL Polyethylene Scintillation Vial: Uses full turn polyethylene screw cap Most economical size to use because it requires least amount of solvent