Bottle Beakers® / Graduated Medium Rounds

Closures sold separately.

Pulp/Aluminum Foil Lined Phenolic Caps are typically used for food applications. Free of odor and taste problems. Also can be used for non-acid, non-alkaline products. Great for organic solvents, chrome cleaners, brake fluids and mineral oils.

Attached black thermoset (phenolic) caps with tin foil liners offer good chemical resistance and are typically used with solids and powders. Good resistance to hydro-carbons, alcohols, ketones and oils. Not recommended for acids and alkalis.

Attached black phenolic (thermoset) caps with Polyseal™ cone liners form an exceptionally tight seal, offering a reliable chemical barrier. This liner molds itself around the sealing areas of the finish as the cap is screwed on, virtually eliminating leakage, evaporation, contamination, binding and backing off. Great for everything from liquids, to soaps, to macro-invertebrates.

Black Phenolic Solid PE Lined Caps offer good chemical resistance and low moisture vapor transmission rate. They are great for nail polish remover and higher concentration acids & alkalis. Good for non-oil products filled at room temperature. Because this lining system is paperless, your samples will not be contaminated with fiber or paper particles from the closure.

Black Unlined Polypropylene Caps are known for good impact strength, cost effectiveness, and pliability. Unlined polypropylene closures are also available in white. These caps are autoclavable and are suitable for many dry products. Discs allow you to convert ordinary caps into non-contaminating closures at a fraction of the cost.

Attached green thermoset caps are known for providing the widest range of chemical compatibility and being the most temperature tolerant of plastic closures. The color green identifies the PTFE liner system. Foam backed PTFE liners resist attack from virtually all chemicals at room temperature and provides resilience for a tight seal with a low moisture transmission rate. F217 has a low density foam core between two solid layers of LDPE. Uses include analytical lab samples, high purity chemicals, strong acids solvents, environmental samples, pharmaceuticals, and diagnostic reagents.

Metal caps offer the widest range of temperature tolerances and are very resistant to fracture from impact. Metal caps are great for industrial and food applications. A metal closure is manufactured from either steel (coated with anti-corrosive coating of either chromeplate or tinplate) or aluminum. Plastisol Lined Metal Caps offer excellent resistance to mild acids as in food products. Permits “hot fill” operations to effectively produce a vacuum seal.

Metal caps offer the widest range of temperature tolerances and are very resistant to fracture from impact. Metal caps are great for industrial and food applications. A metal closure is manufactured from either steel (coated with anti-corrosive coating of either chromeplate or tinplate) or aluminum. White Pulp/Polyethylene Lined Metal Caps are a great general purpose closure. They are ideal for powders and non-acidic food products and consumer products such as jar candles and honey.

Polypropylene SturdeeSeal® PE Foam Lined Caps are known for good impact strength, cost effectiveness, and pliability. These polypropylene closures with foamed polyethylene liners have excellent sealing characteristics and offer good chemical resistance including acids, alcohols, alkalis, aqueous products, cosmetics, household oils and solvents.

White Polypropylene Hole Caps with bonded PTFE/Silicone Septa provide assurance that the septa will not slip away from the cap while injecting. The PTFE/Silicone septa has excellent resealing and chemical resistant properties.