Cole-Parmer Datasheets for Laboratory Stoppers
Laboratory stoppers are truncated, cylindrical or conical pieces that are used to plug, close and/or seal labware.
Laboratory Stoppers: Learn more
Product Name | Notes |
---|---|
• A Certificate of Conformance with regulatory standards is supplied with every shipment Ultra-pure, platinum-cured silicone stoppers are ideal for high-purity applications. They exhibit excellent resistance to most chemicals except... | |
• Snug fit and easy removal<emdash>will not freeze or bind Durable, chemically inert white PTFE stoppers are ideal for use with flasks, funnels, and cylinders that require flask-length stoppers. Hollow... | |
• Standard tapered stoppers, manufactured with XXXX-grade cork Economical, non-reactive stoppers are ideal for contact with nonaggressive or low concentration liquids or powders under average laboratory usage. | |
• Using a fresh, clean bottle for each analysis provides more accurate results in your lab • Ideal for 300 mL BOD bottles | |
Black rubber stoppers stay pliant over a long period and withstand laboratory conditions without hardening. Stoppers retain resiliency even after repeated autoclaving. Each stopper has its size in raised figures... | |
Durable and reusable foam stoppers are an economical way to keep the contents of your containers secure. Open-cell foam has a uniform density, leaves no fibers like cotton, is breathable,... | |
Green neoprene stoppers withstand petroleum products, fats, oils, and organic chemicals. Stoppers exhibit good resiliency and shelf-life. Each stopper has its size in raised figures on top. Contain no sulfur.<b>Autoclavab... | |
PTFE stoppers have a polypropylene turning nut to eliminate frozen neck joints. Use up to 410<deg>F (210<deg>C). | |
Rubber Stopper | |
Silicone bubbles make these stoppers lightweight—they float on water. Withstand temperatures from –76 to 392<deg>F (–60 to 200<deg>C). Stoppers are available in 14 color-coded sizes, given in both standard and... | |
Sizes Standard Taper 10/30 through 19/22 are solid. Sizes Standard Taper 24/40 and larger are hollow. | |
Stopper for butyrometer 17425-10. Order stopper pusher 17425-16. Box of 100. | |
Stoppers | |
Straight plug style stoppers provide maximum sealing for vials with straight wall glass finish. The straight wall interior finish is typically found in vials from European manufacturers. This style is... | |
These two-hole black stoppers made with solid natural rubber stay pliable over a long period of time. Provide good tightness and adhesion, withstand laboratory conditions without hardening, and are ideal... | |
Translucent silicone stoppers are especially suited for procedures demanding high purity, such as tissue culture work and food science applications. Food-grade quality stoppers are nontoxic, chemically inert, and resist particle... | |
Two-part folding skirt stoppers are designed to keep your contents secure two ways. The lower section is molded to grip the outside of the container and the upper hollow plug... | |
Use the tapered micro stoppers for openings from 4 to 12.7 mm. Available in soft, natural red rubber, or heat-resistant, green neoprene. Materials feature low sulfur content and low extractables. | |
Use these versatile Twistit stoppers as either a solid, one-hole, two-hole, or three-hole stopper. Simply twist off a bottom seal to open a hole. The soft resilient natural rubber stays... | |
Use with sample tubes 08710-50. |