1,PTFE stopcock for burettes,

2,Separatory funnel etc,

3,straight shape

4, Material:heat resistant 3.3 borosilicate glass, heavy wall

5,Joint 12.5# 14.5# 18.8#

6, Scope of application:for scientific research, teaching, medicine, and  chemical industries

made of PTFE and glass PTFE Stopcock straight shape