Bottle Caps

Bottle caps provide an air-tight seal that ensures that a bottle’s contents are leak- and spill-proof, resistant to temperature and that the bottle can be moved. The most ubiquitous style is the threaded screw cap. Caps are available in different sizes and colors and can be specialized for the type of container they sit upon. Popular cap materials include phenolic plastic, polypropylene and PTFE. Bottle caps can be lined with additional material and can be found in solid design or open design, which calls for a septa or insert for complete closure.

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DWK Life Sciences DURAN™ Original Laboratory GL Bottle Screw Cap, Linerless Lip Seal, PP

Screw cap with reliable plug seal.

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Specifications

Description	Screw cap
Quantity	10/Pk.
Material	Polypropylene
Autoclavable	Autoclavable
For Use With (Application)	Autoclaving media and reagents; Short term sample and media storage; color coding and identification

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DWK Life Sciences DURAN™ Screw Cap GL 45 with 2-hose connector

A resusable connector GL 45 cap with two ports for connecting tubing.

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DWK Life Sciences DURAN™ High Temperature Screw Cap, PTFE-Coated, Peroxide cured silicone, Red PBT

Screw cap with cap liner sealing and high temperature and chemical resistance.

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Specifications

Description	Screw cap
Color	Red
Closure Liner	PTFE/Silicone
Quantity	10/Pk.
Screw Material	Polybutylene Terephthalate (PBT) with glass fiber
Material	PBT,ETFE,Fiberglass
Liner Material	PTFE-coated Silicone
For Use With (Application)	Autoclaving of media and reagents; Preparation of media and reagents; Suitable for dry heat sterilization; Pressure applications; Storage of corrosive reagents; Chemical and thermal reactions; Long term / archival storage of samples, media and reagents; Sampling; Transport and shipping
Closure Material	PBT with Glass Fiber

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DWK Life Sciences DURAN™ Open Topped Screw Cap, Central Aperture, Red PBT

PBT screw cap with an open top and high temperature and chemical resistance.

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Specifications

Product Type	Open Top Screw Cap
Color	Red
Quantity	10/Pk.
Screw Material	Polybutylene Terephthalate (PBT) with glass fiber
Material	PBT
Autoclavable	Autoclavable
For Use With (Application)	Aseptic reagent delivery and culture sampling using a syringe and needle
Closure Material	PBT with Glass Fiber

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DWK Life Sciences DURAN™ Original Laboratory GL Bottle Pouring Ring

Screw cap with reliable plug seal.

Pricing and Availability
Specifications

Description	Pouring ring
Quantity	10/Pk.
Material	Polypropylene
Autoclavable	Autoclavable
For Use With (Application)	Autoclaving media and reagents; Short term sample and media storage; color coding and identification

Fisherbrand™ Red PTFE-Coated Screw Caps. GL45

Fisherbrand™ Red PTFE-Coated Screw Caps are chemicaly inert and suitable for capping a variety of similarly threaded laboratory containers.

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Pyrex Pyrex™ Polypropylene Screw Caps for Media-lab Bottle

Pyrex™ Polypropylene Screw Caps are ideal for media preparation work.

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Specifications

Material	Polypropylene
Closure Type	Screw Cap
Autoclavable	Autoclavable

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DWK Life Sciences DURAN™ Screw Connection Cap, GL 45, with 2 or 3 GL 14 ports, PP

Flexible 2 or 3 port GL 45 screw cap for connection cap system

Pricing and Availability
Specifications

Thread Size (Metric)	GL 45
Quantity	2/Pk.
Material	Polypropylene,PTFE,Silicone
Autoclavable	Autoclavable
For Use With (Application)	Sterile fluid transfer in and out of lab bottles; Gas transfer in and out of lab bottles; Fluid transfer between lab bottles; Supply of reagents to instruments; Bioreactor supply

DWK Life Sciences DURAN™ Stainless Steel Multiport GL 45 Connector Cap, Red PBT, GL 45, 1 Tubing Connector

1, 2 or 3 connection system for GL 45 DURAN™ bottles.

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DWK Life Sciences Membrane Venting GL Screw Cap, Blue PP, Welded-in Expanded PTFE Membrane, Membrane for Pressure Equilisation During Autoclaving

Laboratory bottle screw caps for autoclaving and sterile storage of media.

Pricing and Availability
Specifications

Quantity	5/Pk.
Material	Polypropylene,ePTFE
Autoclavable	Autoclavable
For Use With (Application)	Pressure equalisation during steam sterilisation/autoclaving of media or buffers; Sterile gas exchange for aerobic microbial, shaker and suspension cell cultures; Autoclaving of media and buffers; Short-term storage of sterilised media; Storage of gas generating materials

Pyrex™ Thermoplastic Polyester Screw Caps with PTFE-Faced Liner

Creates an effective seal while PTFE-faced liner protects against chemical attack. Pyrex™ Polyester Screw Caps with PTFE-Faced Liner are ideal for high temperature applications.

Pricing and Availability
Specifications

Description	Screw cap
For Use With (Equipment)	1516, 1517, 1518, 1519 and 1520 series bottles
Color	Red
Quantity	10/PK.
Material	Thermoplastic Polyester
Closure Type	Screw Cap
Autoclavable	Not Autoclavable
Liner Material	PTFE-faced
Sterility	Dry Heat Sterilized

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DWK Life Sciences DURAN™ GLS 80™ screw cap with four ports

Flexible GLS 80™ cap connection system for use with pass through semi-rigid tubing.

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Fisherbrand White Polypropylene Cap with Insert

Top off alpha glass bottles with the Polypropylene Cap withInsert. The white unicap is tamper evident.

Pricing and Availability
Specifications

Product Type	Cap
Color	White
Screw Material	Polypropylene
Closure Color	White
Closure Material	Polypropylene

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DWK Life Sciences DURAN™ Stainless Steel Multiport GL 45 Connector Cap, from PBT, GL 45, with 2 Ports

2 or 3 port connector caps for GL 45 DURAN™ bottles.

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Thermo Scientific™ Nalgene™ Colored Polypropylene Closures with 20-415 Finish

Ensure leakproof performance with these colored, polypropylene closures with 20-415 finish. Closures are one-piece and linerless with integrally molded seal ring.

Pricing and Availability
Specifications

Description	Nalgene Colored Closures
Closure Size	20-415 mm
For Use With (Equipment)	Nalgene narrow-mouth 8, 15, 30, 60mL bottles
Product Type	Screw Cap
Mouth	Narrow
Height (Metric) With Closure	12 mm
Closure Liner	Unlined
No. per Case	2000
Material	Polypropylene
No. per Pack	2000
Closure Material	Polypropylene
Closure Included	Yes

Bottle Caps

Bottle Caps

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