Centrifuge tubes are specially designed to be placed in centrifuges to separate liquids, cells or other particles based on their density. During centrifugation, the contents are broken down into their components through rapid rotation around the fixed axis. The centrifugal force pushes the heavier components of the substance downwards, while the lighter ones remain at the top. In this way, solids can be reliably separated from liquids as well as substances of different densities.
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Expansion and reduction adapters, borosilicate glass 3.3
LABSOLUTE®
The LABSOLUTE® expansion and reduction adapters are made of high-quality borosilicate glass 3.3. They are the perfect addition, if you want to expand a 14/23 to a 29/32 ground joint or vice versa....
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The LABSOLUTE® expansion and reduction adapters are made of high-quality borosilicate glass 3.3. They are the perfect addition, if you want to expand a 14/23 to a 29/32 ground joint or vice versa.
Made of DURAN
® tubing. Adapter, NS cone to 10mm bore tubing connector. Straight or angled (90°). Available with or without solid glass plug, bore 2,5 mm....
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Made of DURAN® tubing. Adapter, NS cone to 10mm bore tubing connector. Straight or angled (90°). Available with or without solid glass plug, bore 2,5 mm.
Fluoroplastics, for tubing connection. Straight and curved models available, screw connector caps made of PPS reinforced with glass fibre (max. 250°C), ferrules made of PFA, with flexible PFA sealing rim and FPM O-ring. When in use, the contents only comes into contact with PFA (or PTFE - GL25 and GL32)....
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Fluoroplastics, for tubing connection. Straight and curved models available, screw connector caps made of PPS reinforced with glass fibre (max. 250°C), ferrules made of PFA, with flexible PFA sealing rim and FPM O-ring. When in use, the contents only comes into contact with PFA (or PTFE - GL25 and GL32).
Expansion and reduction adapters, borosilicate glass 3.3
Isolab
Manufactured from borosilicate glass 3.3 which is resistant to heat and almost all chemicals. They meet the highest quality standards according to DIN 12257. They have excellent grinding to prevent airleaks. The bottom part of the ground joints are fire polished....
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Manufactured from borosilicate glass 3.3 which is resistant to heat and almost all chemicals. They meet the highest quality standards according to DIN 12257. They have excellent grinding to prevent airleaks. The bottom part of the ground joints are fire polished.
Manufactured from borosilicate glass 3.3 according to DIN 12257 standard, ideal to use for thermometers with Ø 6 - 8 mm. Screw joint provides easy depth adjustment of thermometer. Seal material: NBR....
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Manufactured from borosilicate glass 3.3 according to DIN 12257 standard, ideal to use for thermometers with Ø 6 - 8 mm. Screw joint provides easy depth adjustment of thermometer. Seal material: NBR.
Manufactured from borosilicate glass 3.3 in two different forms, straight or 90° angled. Supplied with PTFE stopcock which has of 2.5mm diameter bore key. Tubing adapter is suitable for up to 10mm tubings....
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Manufactured from borosilicate glass 3.3 in two different forms, straight or 90° angled. Supplied with PTFE stopcock which has of 2.5mm diameter bore key. Tubing adapter is suitable for up to 10mm tubings.
Red. With DIN thread (GL), temperature resistant up to 180 °C, with PTFE coated silicone sealing (VMQ)....
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Red. With DIN thread (GL), temperature resistant up to 180 °C, with PTFE coated silicone sealing (VMQ).
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Adapters NS cone to spherical joint socket, DURAN® tubing
Lenz
Made of DURAN
® tubing. Adapters from ground joint cone to spherical joint socket....
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Made of DURAN® tubing. Adapters from ground joint cone to spherical joint socket.
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Adapters NS socket to spherical joint ball, DURAN® tubing
Lenz
Made of DURAN
® tubing. Adapters from spherical joint ball to ground joint socket....
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Made of DURAN® tubing. Adapters from spherical joint ball to ground joint socket.
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Connectors with NS stopcock, DURAN® tubing
Lenz
Made of DURAN
® tubing. Connectors with NS stopcock, with solid glass plug, with NS socket and NS cone....
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Made of DURAN® tubing. Connectors with NS stopcock, with solid glass plug, with NS socket and NS cone.
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Ground Joint GL Adapters, PTFE
Bohlender
Black, PPS screw cap with GL45 thread or blue PP, screw cap with GLS80 thread, movable insert with ground joint made of PTFE. Transition from a ground joint to a glass thread. The body can be turned independently from the screw cap. The complete, assembled adapter can be removed and fixed onto another bottle without the risk of disarranging the tubing. Very good chemical resistance, for working temperatures up to max. +250 °C....
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Black, PPS screw cap with GL45 thread or blue PP, screw cap with GLS80 thread, movable insert with ground joint made of PTFE. Transition from a ground joint to a glass thread. The body can be turned independently from the screw cap. The complete, assembled adapter can be removed and fixed onto another bottle without the risk of disarranging the tubing. Very good chemical resistance, for working temperatures up to max. +250 °C.
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Ground Joint Reducing Sets
Bohlender
This set consists of PTFE reducing rings graduated in ground joint sizes 14.5 / 18.8 / 24 / 29.2 / 34.5 / 45 and 60. With these rings, different cone and socket sizes can be connected. For example, it is possible to fit a 14.5 cone into a socket of 45. Also other combinations are possible. With this set you can practically cover all requirements within the lab....
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This set consists of PTFE reducing rings graduated in ground joint sizes 14.5 / 18.8 / 24 / 29.2 / 34.5 / 45 and 60. With these rings, different cone and socket sizes can be connected. For example, it is possible to fit a 14.5 cone into a socket of 45. Also other combinations are possible. With this set you can practically cover all requirements within the lab.
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Screwthread couplings, PBT
DWK
DIN screwthread. For flexible connection of two glass screwthreads. With integral PTFE-faced silicone (VMQ) seals. Temperature resistant to max. 180°C....
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DIN screwthread. For flexible connection of two glass screwthreads. With integral PTFE-faced silicone (VMQ) seals. Temperature resistant to max. 180°C.
Manufactured from borosilicate glass 3.3 with two different shapes: straight or 90° angled. Tubing adapter is suitable for up to 10 mm tubings....
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Manufactured from borosilicate glass 3.3 with two different shapes: straight or 90° angled. Tubing adapter is suitable for up to 10 mm tubings.
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Screw caps GL45, aluminium
DWK
The caps are available as a closed-top cap with a high temperature PTFE coated cap liner, or as an open-top cap for use with septum or stopper. Metal closures offer a wide range of temperature tolerances and have a high mechanical strength.
Free of hydrocarbon-based plastics, plasticisers, phthalates, etc.
High temperature usage up to 260 °C
Thread fits all DURAN® GL 45 glass bottles
Secure sealing with USP <88> Class VI PTFE coated silicone cap liner
Electrically conductive material - ESD dissipation
Cap liner is supplied unmounted
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The caps are available as a closed-top cap with a high temperature PTFE coated cap liner, or as an open-top cap for use with septum or stopper. Metal closures offer a wide range of temperature tolerances and have a high mechanical strength.
Free of hydrocarbon-based plastics, plasticisers, phthalates, etc.
High temperature usage up to 260 °C
Thread fits all DURAN® GL 45 glass bottles
Secure sealing with USP <88> Class VI PTFE coated silicone cap liner
Electrically conductive material - ESD dissipation
In order to meet the variety of different requirements, we offer centrifuges in a wide range of formats, sizes and materials.
Application and quality
Centrifuge tubes are used wherever the components need to be split - for example, for blood samples to separate the plasma, to isolate proteins or DNA, to collect cell cultures
or microorganisms from cultures, for the concentration of particles from environmental samples... The range of applications is diverse.
The high demands placed on these analyses also mean that no compromises can be made when selecting the centrifuge tubes used.
At Th. Geyer, we therefore focus on the highest quality and maximum safety - even at maximum speeds and high centrifugal pressure.
The material
You can choose between plastic, glass and stainless steel for the raw materials used. While stainless steel usually plays a subordinate role, plastics such as polypropylene (PP), polyamide (PA), polyethylene (PE) or polycarbonate (PC) are the standard in laboratories and research environments.
Depending on the type of plastic, centrifuge tubes can withstand very low to very high temperatures.
They are stable against chemicals and can be translucent or opaque, depending on requirements.
Centrifuge tubes made of glass impress with their basic resistance to chemicals, acids, bases and organic solvents.
The glass variants score points with their reusability and above-average durability. If required, glass allows a high degree of transparency and offers relatively easy handling
If the material is subjected to high speeds during centrifugation, plastic is usually the better choice.
Th. Geyer offers centrifuge tubes in both variants.
The sizes
Th. Geyer meets the specific requirements for the dimensions and capacity of centrifuge tubes with a large selection of different sizes.
These can be up to 500 ml, while sizes such as 50 mL and 15 mL are available for smaller filling volumes. In the micro range, centrifuge tubes are between 1.5 mL and 0.2 mL, which are mainly used in laboratories.
Of course, we offer you a wide selection of all common formats.
The lid
During centrifugation, the lid of the centrifuge tube prevents liquid from leaking out. Traditionally, screw, push-in or plug-in lids are used for this purpose, which are easy to close.
Micro centrifuge tubes are usually fitted with a snap-on cap. For very large variants, threaded lids ensure leakage protection. You will find both models with and without lids in our range.
Depending on your choice, you can always order stoppers and the like separately.
The base
The different base variants also meet the respective requirements. The conical base with its slightly tapered shape allows for selective material collection, making separation and removal much easier
Sample recovery is particularly high. Alternatively, you can also choose between self-standing centrifuge tubes with a flat base or a rounded base.
Benefit from our portfolio of centrifuge tubes
Are you looking for centrifuge tubes for demanding applications? Th. Geyer offers a wide range of the highest quality. Functional, easy to handle and with an attractive price-performance ratio.
Please feel free to send us your enquiry or contact us directly in person. We look forward to hearing from you!
