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- General laboratory consumables
- Occupational safety, Security
- Analytical measurement and testing
- Stirring, Shaking, Mixing
- Sample preparation
- Distillation, separation, filtration
- Heating and cooling technology
- Liquid Handling
- Vacuum technology, Drying, Dry storage
- Optical instruments and microscopes
- Cleaning and sterilisation
- Environmental-, soil-, water-, food analysis
- Chromatography
- Cleanroom
Graduated flasks
Volumetric flasks provide precise results in chemistry and pharmacy. They are not scaled, but have a single ring mark that is drawn all the way round the neck to avoid reading errors.
The narrow neck results in high setting accuracy. In addition, volumetric flasks have bulbous curves in the upper area so that any gas bubbles that form can escape from the solution more easily. However, if there are gas bubbles in the solution, the volumetric flask must be swivelled slightly so that the bubbles rise to the top. In addition to volumetric pipettes and burettes, volumetric flasks are therefore the most accurate volumetric instruments in the laboratory for analysis.
With natural rubber / TEF septa
Crimp seals ND11 are made of aluminium. They are clear or lacquered in different colours and have a 5.5 mm hole. They are supplied with fitted septa made of a variety of materials.
These septa are temperature-resistant from -40 °C to 120 °C and ideal for multiple injections thanks to their excellent resealability properties....
Short thread vials and micro-vials ND9, wide opening
Short thread vials and micro-vials ND9 are available in clear and amber first hydrolytic class glass and can be used on almost all autosamplers. You can replace other 1.5 ml vial types like 11 mm crimp neck vials, 8-425 and 10-425 screw neck vials, which can help rationalize stocks.
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With silicone / PTFE septa
Crimp seals ND11 are made of aluminium. They are clear or lacquered in different colours and have a 5.5 mm hole. They are supplied with fitted septa made of a variety of materials.
These septa are temperature-resistant from -60 °C to 200 °C and have a better purity than septa made of natural rubber or red rubber. However, they have less effective resealability properties and are therefore more suitable for single-injection applications....
With RedRubber / PTFE septa
Short thread screw seals ND9 are made of PP and are supplied with fitted septa made of a variety of materials. They have a 6 mm centre hole and are available in different colours. The screw caps are similar in shape to the crimp caps and are therefore also suitable for robotic handling.
These septa are temperature-resistant from -40 °C to 110 °C. They are easier to penetrate and have lower particle formation than septa made of natural rubber....
With silicone / PTFE septa
Short thread screw seals ND9 are made of PP and are supplied with fitted septa made of a variety of materials. They have a 6 mm centre hole and are available in different colours. The screw caps are similar in shape to the crimp caps and are therefore also suitable for robotic handling.
These septa are temperature-resistant from -60 °C to 200 °C and have better purity than septa made of natural rubber, butyl or red rubber. However, they have less effective resealability properties and are therefore more suitable for single-injection applications. Septa with a double-sided PTFE coating show a very low particle formation during penetration....
Screw neck vials and micro-vials ND8, small opening
Screw neck vials and micro-vials ND8 are available in clear and amber first hydrolytic class glass. They have a 8-425 thread and are used as standard in GC and HPLC applications. A large selection of micro-inserts with a 5 mm diameter is available for these vials. The micro-vials often require an adapter so that they can be used in an autosampler....
Screw neck vials ND24 (EPA)
Screw neck vials ND24 made of clear and amber first hydrolytic class glass are suitable for EPA (Environmental Protection Association) analysis and can, upon request, be supplied with a sterility certificate that is specifically required for TOC analyses.
These vials are especially used with autosamplers made by Agilent, Dionex, Shimadzu, Tekmar, Thermo Scientific and Varian....
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Measuring flasks for your specialisation
Measuring flasks are an important instrument in numerous scientific and industrial applications. Their versatility makes them indispensable for the precise preparation of solutions and for volumetric analyses. They are crucial for preparing reagents for experiments and reliably checking formulations and concentrations in the pharmaceutical industry. They are also useful aids in educational institutions such as schools, especially in subjects such as physics and chemistry. helpers.
Highest quality volumetric flasks from Th. Geyer
Th. Geyer offers you a comprehensive range of volumetric flasks that are specially tailored to your individual needs. Benefit from our high standards of quality, safety and functionality. For over 130 years, we have been a reliable partner to numerous satisfied companies, organisations and public institutions. institutions.
Whether for analytics, research or science - we are a full-range supplier. Our volumetric flasks and other products for your laboratory requirements fulfil all legal requirements. We are certified according to ISO 9001:2015 and comply with all directives of the EU regulation REACH.
High-quality volumetric flasks for every requirement
Measuring flasks are essential for precise volume measurements in the production of chemical solutions and when carrying out analytical processes. At Th. Geyer you will find a large selection of high-quality volumetric flasks in various sizes, materials and designs, with which you can ensure maximum accuracy when measuring a specific volume in chemistry and other natural sciences. With their pear-shaped or conical design and sophisticated features, our models are ideal for a wide range of applications. areas of application.
Our range boasts many different models made of high-quality borosilicate glass or plastic. They are calibrated to "In" and "Ex", graduated in blue or white and comply with DIN EN ISO 1042:
- LABSOLUTE® Class A volumetric flasks with PE stopper or with hollow glass stopper
- LABSOLUTE® Class A volumetric flasks in trapezoidal shape graduated in blue or white
- DURAN® Class A volumetric flasks with PE stopper or with amber glass stopper
- Nalgene™ volumetric flasks
- Class B volumetric flasks made of PP with screw cap
- BLAURAND® graduated cylinder with high mould and individual USP certificate
- Variants for determining the oil content
- Variants for sugar analysis
- Dosing attachments for automatic tilting machines of the DURAN® tube
- and much more
Excellent volumetric flasks and top advice
At Th. Geyer, you can order safely and easily from a single experienced source. You will receive both small and large quantities of volumetric flasks of the highest quality at an attractive price-performance ratio. Still haven't found what you're looking for? Browse through related product categories, such as graduated cylinders and mixing cylinders.
We look forward to your personal enquiry and will be happy to advise you personally and individually. Simply contact us without obligation. We are here for you here for you
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