DURAN® GL 45 Connection Cap for Narrow Tubing

  • Available with 2, 3, 4 or 5 stainless steel (316L) tubing connectors
  • Ideal for aseptic fluid transfer using peristaltic pump tubing 
  • Manufactured from hygienic, chemically resistant and food contact safe materials
  • Tangle-free tubes with the PTFE center freely rotates 
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DURAN® Silicone Lid

  • Suitable for a wide range of applications as it can be used to cover and seal a variety of differently shaped lab containers 
  • The DURAN® silicone lid seals flush with the container and protects the contents from
    dust or splashes.
  • Three different colours make it easy to colour mark different samples. In addition, sample information can be written with a lab marker on the marking field flap to indicate the sample.
  • Easy to clean, dishwasher-safe and reusable
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DURAN® Petroleum Centrifuge Tubes

  • For Determination of water and Sediments in crude oil
  • Improved durability by using Lazer-FusedTM marking technology
  • Manufactured from borosilicate 3.3 glass
  • Outstanding volumetric accuracy
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NMR Tubes

  • Optimized for fast and accurate test results
  • Good uniformity of diameter
  • Uniform wall thickness
  • Excellent straightness
  • Available in two borosilicate glass versions (3.3 and 5.1)
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DURAN® Multiport Connector Caps GL 32

  • 2, 3 or 4 port Connector Caps
  • Fit the DURAN® GL 32 Bottles (50 ml) or 100 ml DURAN® Square Bottles
  • Easy low volume sampling
  • High temperature resistance (up to 180 °C)
  • Reusable with a long service life 
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DURAN® 4-Port Connector Cap GL 45 made from stainless steel

The DURAN® 4-port connector cap is manufactured using an innovative additive manufacturing method called 3D metal printing.  

  • The connector cap can be used for all sizes of DURAN® GL 45 bottles, and facilitates the movement of liquids within a closed and aseptic system
  • The four male hose connectors are suitable for flexible tubing with a 6.4 mm inner Diameter 
  • Freely rotating stainless steel centre allows the bottle to be unscrewed without the need to disconnect the tubing
  • Wide temperature usage up to 140 °C (or 180 °C with the optional PBT aperture GL 45 cap) 
  • Autoklavable (at 121 °C / 15 minutes)
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DURAN® HPLC Reservoir Bottle GL 45 with Conical Base

The DURAN® Reservoir Bottles have been designed for the storage and delivery of high-performance liquid chromatography (HPLC) mobile phases and solvents. 

  • Reservoirs have one central cavity for the inlet filter to allow the most efficient deliver of mobile Phase to HPLC analyzers
  • A safer and more convenient alternative to flat bottomed glass media bottles
  • The larger reservoirs allow longer, uninterrupted analyses, which is especially useful during a weekend or lengthy chromatographic Analysis when there might be a risk of running out of solvents during unattended operation
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DURAN® Volumetric Flasks with printed graduation mark

  • Achieves precision due to better visibility of the printed graduation mark
  • Print is highly resistant to chemicals
  • Comply with the requirements of ISO 1042
  • With new PE stopper - can be ordered separately
  • Well-known DURAN® borosilicate glass 3.3 quality due to high internal raw material requirements
  • Increased service life and cost-effectiveness
  • Retraceable
  • Auditable
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DURAN® Sterile Venting Membrane Screw Caps

Ideal for autoclaving processes because the 0.2 micron ePTFE membrane Permits pressure qualisation and tight sealing, greatly reducing the risk of contamination. Ingress of liquids or solids is prevented and the bottle contents remain sterile.

  • The microporous structure of the expanded polytetrafluoroethylene (ePTFE) membrane enables sterile gas Exchange in two directions while blocking the flow of high Surface tension aqueous liquids like water 
  • New, thinner ePTFE membrane combined with larger vent holes increase the rates of gas exchange
  • Membrane Caps can be autoclaved at 121 °C (20 minutes) or 134 °C (3 minutes) 
  • Cost effective as the caps can be reused several times
  • Convenient as six caps are available allowing the use with a large range of bottle sizes from 10 ml up to 3500 ml
  • Biocompatible: The ePTFE filter material conforms to USP <88> 121 °C Klasse VI
  • The PTFE membrane and its polypropylene mesh support are ultrasonically welded in place forming a durable seal
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DURAN® GL 45 Bottle Carrying System

The new modular Bottle Carrying System fits standard laboratory bottles that have a GL 45 neck finish.

  • Compatible with four bottle sizes 2, 5, 10 and 20 litres
  • It is ergonomically designed, and offers health and safety benefits to the user 
  • It allows easy and safe transport of bottles around the laboratory or production facilty
  • Makes pouring liquids from the larger bottles more comfortable and safer
  • All materials are fully autoclavable
  • Download product brochure
  • Download installation instructions

DURAN® YOUTILITY Identification Labels

The accurate and reliable labelling of scientific samples is an integral part of the success of your laboratory. The robust DURAN® YOUTILITY identification labels are suitable for use with the YOUTILITY bottle, plus many other types of laboratory glassware, such as GL 45 bottles, beakers and conical flasks.

  • The tear resistant, white polyester YOUTILITY labels use a high performance, peelable adhesive.
  • An easy-to-use label creator web app. is available (www.duranlabels.com) to design,and print your own label designs.
  • Ideal for use in fridges, freezers, autoclaves, incubators, and water baths, without the risk of the labels falling off.
  • Can be printed with office printers, copiers, or marked with technical lab pens (pre-test ink for suitability).
  • Chemically resistant to many typical laboratory chemicals, and solvents.
  • Wide −40 to +150 °C thermal performance range.
  • Supplied in a re-sealable, pack of 100 labels on five A4 Sheets.
  • Download Product Flyer

DURAN® Brombobutyl Rubber Stopper

DURAN® bromobutyl rubber closure provide a gas tight seal for all GL 25 and GL 45 laboratory bottles. Bromobutyl rubber is essentially impermeable to most gasses, and provides a controlled environment inside the glass bottle for oxygen sensitive materials. Useful for maintaining anaerobic culture conditions. Butyl rubber allows for multiple punctures providing easy access to the contents with a syringe.

  • Stopper shape, and material properties optimised to fit 10 and 25 ml DURAN® GL 25 bottles and DURAN® GL 45 bottles with sizes from 100 to 20,000 ml.
  • Low permeability to air, gases and moisture.
  • Manufactured from a high purity bromobutyl rubber elastomer.
  • Conforms to EP 3.2.9 Type I closure for chemical and penetration tests..
  • Material is virtually free of organics that might leach into the incubation medium.
  • Elastic material for effective sealing and reliable self-sealing after needle piercing.
  • Upper surface features seven numbered hemispherical impressions for needle-piercing.
  • Wide usable temperature range: -50 to +121 °C.
  • Suitable for autoclaving / steam sterilising at 121 °C for 20 minutes.
  • Use with the DURAN® GL 25 / GL 45 open topped / aperture screw cap for extra security.
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  • Download FAQs

Pasteur Pipettes made of borosilicate glass 5.1

Due their material properties, Pasteur pipettes made of borosilicate glass 5.1 are a high-quality alternative to plastic pipettes and pipettes made of soda-lime glass.

  • Glass pasteur pipettes with short and long drawn fine tip
  • Made of clear borosilicate glass 5.1
  • USP Type I neutral glass
  • Pipettes conform to ISO 7712
  • Inured to rapid temperature changes and chemical attack
  • Very good chemical resistance to acidic and alkaline solutions
  • Borosilicate glass 5.1 is more stable than soda-lime glass and therefore ideal for the transfer of hot liquids
  • Virtually inert borosilicate glass minimizes interaction with the material and reduces the risk of sample contamination
  • Rubber teat, made from natural rubber, can be ordered separately
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DURAN® Original GL 45 Lab Bottles complete with high temperature closures

DURAN® original GL 45 Laboratory Bottles are available complete with high temperature screw caps and pouring rings. The PBT cap and ETFE pouring rings offer greater thermal and chemical resistance than the equivalent polypropylene components.

    • Glass bottles are manufactured from clear DURAN® borosilicate 3.3 glass, renowned for its excellent thermal performance and high resistance to chemical attack.
    • DURAN® glass conforms to USP / EP Type I.
    • Available in a full range of popular bottle sizes from 100 ml to 10 Litres.
    • The bottles feature an easy-to-read graduated volume scale, and marking field in permanent white enamel.
    • Permanent Retrace Code on each bottle for full manufacturing lot traceability.
    • All components are fully autoclavable at 121 or 134 °C.
    • All components are suitable for dry heat sterilization up to 180 °C.
    • Supplied complete with red polybutylene terephthalate (PBT) GL 45 threaded cap with PTFE faced silicone liner and ETFE pouring ring for drip free pouring.
    • Addition of 30 % glass fibre reinforcement to the PBT resin increases stiffness, tensile strength and impact resistance of the screw cap.
    • Screw cap seal with PTFE faced cap liner for efficient sealing.
    • All construction materials are fully compliant with current international food contact regulations such as (EU) No 10/2011.
    • Download Product Information

    DURAN® PTFE Coated GL 45 silicone septum for piercing

    High purity PTFE coated silicone septum for use with DURAN® GL 45 open topped screw cap and all sizes of DURAN® GL 45 laboratory bottles. Can be used for the addition, inoculation or sampling using a syringe and needle. Ideal for chemistry, life science and biopharma laboratories.

    • Soft silicone rubber for easy needle penetration and resealability
    • Manufactured from high purity, Platinum catalysed silicone rubber and high quality PTFE film, reducing the risk of solvent contamination
    • The silicone is faced with highly resistant PTFE to protect the silicone from chemical attack by the solvents
    • The septum is suitable for use with all GL 45 sizes of the DURAN® GL 45 bottles from 100 to 20,000 ml
    • A liquid tight seal is provided when used in combination with the red PBT GL 45 open topped screw cap
    • Wide temperature usage range from – 50 °C up to + 180 °C
    • Autoclavable at 121 °C for 15 minutes
    • Dry heat sterilizable at up to 180 °C
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      DURAN® TILT Media Bottle System

      The DURAN® TILT bottle system was specifically developed for preparing and pipetting of cell culture media. The TILT bottle can be used in two positions: upright for filter sterilization and tilted at 45 ° for pipetting. 

      • Unique 45° TILT position for easy pipetting 
      • Wide GL 56 mouth with non-cytotoxic, ergonomic screw cap
      • Low bottle height for easy handling in biosafety cabinets and clean hoods
      • Space Saving shape for fridge storage and in water baths 
      • Tilted volume indicator visible from both sides 
      • Vacuum resistant bottle for safe filter sterilization 
      • Non-cytotoxic DURAN® borosilicate 3.3 glass 
      • Innovative accessories: sterile vacuum filtration units, re-usable GL 45 adaptor, protective Light Shield, colourful Bottle Tags, and GL 56 cap labels for clear media identification 
      • Product website 
      • Download product brochure 

      DURAN® GLS 80® Baffled, Wide Mouth Bottle

      The DURAN® GLS 80® baffled, wide mouth bottle has three vertical baffles into the inner surface, the swirling motion is disrupted, and a much more effective mixing occurs. The baffles improve the top-to-bottom circulation and produce a greater radial mixing. The baffles also offer other advantages such as suppressing the formation of a central vortex, and reducing dead-zones where mixing does not occur.

      • Compatible with DURAN® GLS 80® magnetic stirrers, other magnetic stir bars, and with the full range of wide mouth GLS 80® connection cap systems for liquid addition or removal when mixing with stir bars.
      • The baffles are moulded into the glass side wall of the bottles and form a continuous, smooth inner surface making clean up easy
      • Bottles are fully autoclavable
      • Easy-to-read graduated volume scale
      • Manufactured from DURAN® borosilicate 3.3 glass
      • Download Product Information
      • Download Product Video
      • View Video on Youtube

      DURAN® pressure plus+ Laboratory bottle

      with DIN thread GL 45
      • NEW: Now also available in 100 ml
      • Vacuum or pressure resistance guaranteed
        from -1 bar to +1.5 bar
      • Available in four sizes: 100, 250, 500 und 1000 ml
      • All sizes also available in amber
      • Maximum safety for any pressure or vacuum application
      • Safety tested by the TÜV, in accordance with
        EN 1595 (TÜV ID:0000020716)
      • Bottles are fully autoclavable and sterilizable
      • Manufactured from DURAN® borosilicate 3.3 glass
      • Safety instructions
      • Download Poduct Brochure
      • Download Product Flyer
      • Download Overview Bottle Range

      You can find further information about the DURAN® pressure plus+ laboratory bottle here.


      DURAN® Multiport-Connector Caps GL 25

      • Caps have a GL 25 thread that fit the smaller 10 or 25 ml DURAN® bottles
      • Barbed male hose connector are suitable for tubing with 3.2 mm (1/8 ") inner diameter
      • Available with 2, 3, or 4 surgical grade stainless steel (316L) barbed tubing ports
      • Construction materials are certified as approved for food contact 
      • High temperature resistance (up to 180 °C)
      • Autoclavable (@ 121 °C / 15 minutes)
      • Reusable with long service life
      • Download Product Flyer 

      DURAN0® Stainless Steel 1-, 2- or 3-Port Connector Cap GL 45

      A robust and durable tubing connection system for use with all sizes of DURAN® GL 45 laboratory and media bottles. The bottle top adaptor facilitates the transfer of liquids within a closed and sterile system. Ideal for chemistry, life science and biopharma laboratories.

      • GL 45 connector cap can be used for all sizes of DURAN® GL 45 bottles from 100 to 20,000 ml
      • The one, two or three barbed, male hose connectors on both the top and bottom assemblies are suitable for flexible tubing with a 8.0 mm inner diameter
      • Freely rotating stainless steel centre allows the bottle to be unscrewed without the need to disconnect the tubing
      • The connectors are slightly splayed to facility easier attachment of the tubing
      • A liquid tight seal is provided by a silicone gasket and the red PBT GL 45 screw cap
      • Wide temperature usage range (up to 180 °C)
      • Autoclavable (@ 121 °C / 15 minutes)
      • Retrace coded for full traceability
      • Download Product Flyer

      DURAN® YOUTILITY GL 45 Laboratory Bottle System

      • Ergonomically shaped gripping zones on both sides of the bottle for easier and safer handling 
      • With the optimised thread opening or closing the bottle is significantly faster. The thread is fully compatible with DIN GL 45 closures and other accessories
      • Proven DURAN® properties
      • Innovative accessories for identification and personalisation
      • Available also in amber
      • Product website
      • Download product brochure
      • Download product flyer

      You can find further information about the DURAN® YOUTILITY bottle system here.

      Amber DURAN® YOUTILITY GL 45 Laboratory Bottle System

      • Amber coloured glass offers protection against ultraviolet light for the safe storage and transport of light sensitive material
      • Fully meets the requirements of the USP <660> and Eur. Ph. 3.2.1
      • Amber colour is permanently fired into the exterior glass surface. The treatment does not affect the properties of the inner surface of the bottle

      DURAN® double walled, wide mouth bottle GLS 80®

      • Simple, low cost, jacketed chemostat or bioreactor for cell culture. 
      • Vessel for temperature-controlled reactions such as enzyme digestions. 
      • Simple continuous flow stirred reactor system with the optional GLS 80® cap components. 
      • Manufactured from DURAN® borosilicate 3.3 glass. 
      • Wide usable temperature range of – 40 to +120 °C. 
      • Available in two convenient sizes: 500 and 1000 ml. 
      • Download product Information

      You can find further information about DURAN® Volumetric Glassware here.