With sidearm and pressure/vacuum stopcock. With Inner/Outer Jt. at Top. Lower stopcock is PTFE.

With sidearm and pressure/vacuum stopcock. With Inner/Outer Jt. at Top. Lower stopcock is PTFE, but with fritted disk.

Allows solutions to be prepared using magnetic spinner and added proportionately. PTFE stopcock on equalizing arm permits isolation of the contents for storage, 100 ml is calibrated every 1 ml and 250 ml is calibrated every 10 ml. Glass stopcock on arm is pressure/vacuum stopcock.

Larger volumes available upon request