Used for storage or simple reactions. With 10/10 or 14/10 outer joint externally threaded for making an O-RING-CAP-SEAL connection with mating inner joint. Stopcock on side arm is 1mm bore glass. Item supplied with holed cap, O-Ring and septa for sealing or syringe retrieval. For replacement caps (holed), see 9590-46, -47; (solid), see 9590-58, -60; for O-Rings, see 7855-706, -720; for septa, see 8787-42, -43.