Straight Bore PTFE Stopcock, with Dust Cap Series 17033FKIMAX buret with a size PS 2 (2mm bore) PTFE plug.  RAY-SORB processed to protect liquids sensitive to light of shorter wave lengths.  KIM-KAP dust cap is included.  Scale is durable, opaque white ceramic enamel.  Replacement stopcock is 41500F-2.