Burets Automatic Serialized and Certified Three Way PTFE Stopcock with Reservoir Bottle Class A Capacity (mL) 10. Interval Grad. (mL) 0.5 to 10. Subdivision (mL) 0.05. Approx. Assembled Length (mm) 765. Tol. (mL) 0.02. [standard taper] Stopper Size Betwee