Teflon Vials for Precise C-14 In Benzene Measurements by LSC Technique.

We had developed and well tested vials in which Teflon and titanium where used as only materials. We avoid other material thinking about benzene sorption. We control counting efficiency avoiding presence of any “dead zone” inside. Vial flask and cap are spline coupled, both produced of Teflon. Other parts are of metal: stand, washer and valve. Vial volume ranges of: 0.8, 1.5, 2.5, 4.0 and 7.0 ml. Vials have extreme durability, low benzene leakage, high counting efficiency and low background. Benzene leakage is below 0.1% for one months of storage for series of vials. Keywords: C-14, LSC, Teflon vial, titanium, extreme durability, low benzene leakage