Used with mineral oil to observe gaseous addition to reactions

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.

Modified for Arsine analysis

Perfect for handling higher flow volumes in process while using connections similar to luer systems. Cole-Parmer™ 3-Way Large Bore Stopcock is non-sterile and not approved or intended for medical, clinical, surgical or other patient oriented applications.

Heavy-duty nylon

Contains replacement reagents to run all Saftest™ test kits.

Simple condensers for condensation of materials with boiling points above 150°C.

With a removable, leak-proof plug made of chemical-resistant, non-stick PTFE with barbed tubulations that accept 1/4 to 3/8 in. I.D. tubing

Manufactured from borosilicate glass. DURAN™ Gas Washing Bottle is used with gaseous mediums.

Ideal for reflux applications.

Provides an inexpensive but effective method for the washing and drying of gases. Lenz Laborglasinstrumente™ Gas Washing Bottle Heads without Filter Disc are manufactured from durable DURAN™ borosilicate glass.

For use with Retsch MM 200 Mixer Mills.

Use these PTFE chips to promote gentle, efficient boiling and help prevent overheating of highly volatile liquids. Saint Gobain Performance Plastics™ Chemware™ PTFE Boiling Stones are not affected by acids, hydrocarbons, ketones, esters, alcohols or alkalis.

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.

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

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

Fisherbrand™ PTFE Burette Stopckcock, Straight Through Type supplied with 8mm diameter sidearm in borosilicate glass, bore is 2mm.

For analytical work

Cowie Technology™ PTFE Straight Through Stopcocks feature a pure PTFE body and plug and combine all the desirable properties of the Ultimate Laboratory Stopcock.

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.

Filter aid

Resist attack by liquids or vapors

Experience in-house fluid transfer system flexibility with this three-way stopcock, arranged in a T-shape to simply any two — or all three — arms of the stopcock with ease.

Choose cells with quartz windows for transformation from the far ultraviolet through infrared

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

Cowie Technology™ PTFE T-Type Stopcocks feature a pure PTFE body and plug and combine all the desirable properties of the Ultimate Laboratory Stopcock.