Best Gas Stopcock

Dropping Funnel, 100ml, Cylindrical - Screw Thread, Socket Size 24/29, PTFE Stopcock, Borosilicate Glass - Eisco Labs

Cylindrical Dropping Funnel made of high quality, heavy duty, 3.3 borosilicate glass.

Nalgene Class B Accuracy Acrylic Burets 100 ml (Case of 4)

Delivery end is fitted into a plastic push button stopcock which permits drop by drop delivery.
Small screw clamp adjusts drop speed as needed for titration.
Polyethylene filling tube extends from the top of the burette into the bottle reservoir.
Bottle, screw cap and round base are polyethylene plastic.

Separatory Funnel, 500mL - Polypropylene - Polypropylene Stopcock, PTFE Plug - Leak-Proof Screw Cap - Eisco Labs

Separatory Funnel made of high quality polypropylene.
Stopcock, fitted with self lubricating PTFE plug.

EISCO CH0233B Acrylic Buret with PTFE Stopcock, 50mL Capacity, 0.1mL Graduation

Polytetrafluoroethylene (PTFE) plastic plunger stopcock for resistance to chemicals, moisture, and high temperatures.
Suitable for high school or college students, or ages 14 to 21.

Squibb Separating Funnel, 500ml - 24/29 Plastic Stopper, Glass Key Stopcock, Graduated - Borosilicate Glass - Eisco Labs

Made of high quality, heavy duty Borosilicate glass.
Includes interchangable plastic stopper. Socket size 24/29.

SP Bel-Art Polypropylene Stopcock with PTFE Plug; for ¼ to ⅜ in. I.D. Tubing (F42040-0000)

Cadence Science 6030IND stopcock ml large to 8 mm hose end.

Squibb Separating Funnel, 2000ml - 29/32 Plastic Stopper, PTFE Key Stopcock, Graduated - Borosilicate Glass - Eisco Labs

Squibb Separating Funnel made from high quality, heavy duty 3.3 borosilicate glass..
PTFE stopcock and interchangeable plastic stopper..

Dropping Funnel, 500ml - PTFE Key Stopcock, Open Top, Cylindrical - Ungraduated - Cylindrical, Borosilicate Glass - Eisco Labs

Made of high quality, Borosilicate glass.
Cylindrical Dropping Funnel, made of high quality borosilicate glass.
Perfect for any science or home laboratory.

Dropping Funnel, 100ml - PTFE Key Stopcock, Open Top, Cylindrical - Ungraduated - Cylindrical, Borosilicate Glass - Eisco Labs

Made of high quality, Borosilicate glass.
Cylindrical Dropping Funnel, made of high quality borosilicate glass.
Perfect for any science or home laboratory.

Kimble 17054F-25 25mL Class A Automatic Burette, with 3-Way PTFE Stopcock

Precision bore burette is permanently marked with an individual serial number.
Supplied with a Certificate of Graduation Accuracy and designed from ASTM Specification E287, Class A requirements.
Filling is through a standard 2mm bore stopcock.