General purpose vials can be used for liquid scintillation counting, gamma counting, chromatography, sample storage, and culturing. Fits LKB and Packard Varisette counters. Vials are securely sealed by snapping the cap on. Cap removal requires a simple 1/4 twist, reducing the chance of spillage associated with pull of caps. Polyethylene vials are supplied with polypropylene caps. Polypropylene vials are supplied with polyethylene caps.