DWK Life Sciences Wheaton™ Liquid Scintillation Vials. Maintain the integrity of seals with a variety of cap liners. Wheaton™ Liquid Scintillation Vials are manufactured from rigid yet flexible HDPE plastic. Promotions are available. Height (Metric) 61 mm. Volume (English) 0.67 oz. Diameter (Metric) Inner Neck.