Use these stopcocks for a variety of applications. Cole-Parmer™ Stopcocks with Luer Connections feature a PC body and an HDPE stem.

Regulate flow without any leaking using these fittings. Cole-Parmer™ Stopcocks with Luer Connections are available with either a male luer lock or a male luer slip.

Use Witeg™ Glass Beads as distillation column packing, mixing beads, and boiling stones.

Use these stopcocks for a variety of applications. Cole-Parmer™ 4-way Stopcocks feature a PC body and an HDPE stem.

In vetro borosilicato

Inserts into the ground glass side-socket of an aspirator botte. Pyrex™ Borosilicate Glass Aspirator Stopcock with Ground Cone provides a leakproof seal.

In vetro trasparente lucido. Le sfere in vetro Karl Hecht™ sono utilizzabili come sfere di ebollizione, biglie di miscelazione e per colonne di distillazione.

Regulate flow without any leaking with these stopcocks. Cole-Parmer™ Three-Way Stopcocks feature a male luer lock, PC body and an HDPE stem. Handle rotates 180 degrees.

Duran™ glass features good thermal shock and chemical resistance.

Hose tubing stop-cock – Simple reflux nozzle with two-sided hose nozzle.

Used with mineral oil to observe gaseous addition to reactions

Strong, soft, pliable glass wool is ideal for general lab and industrial applications. Suitable for filtering.

Modified for Arsine analysis

For use with Aspirator Bottles 1565: series with Rotaflo™ PTFE key.

For use with Retsch MM 200 Mixer Mills.

With a ground neck standard connection of 19/26.

Two Way Valves are used for transfer of liquids or gases in order to release the flow, to block it or to change its direction.

Suitable glass beads for the mini-BeedBeater™ Mill. Cole-Parmer™ Glass Beads for Mills are used to crush and separate small samples from bone to microbial spores.

Thermo Scientific™ Test-Tube Cuvettes are easy-to-use, inexpensive spectrophotometer cells for routine analyses.

Minimize “bumping” in boiling

Filter aid

For preparative work

Develop in-house fluid transfer systems for accurate filling or dispensing. These stopcocks provide reliable, accurate liquid flow control.