Hellma Large Cuvette 740.000-OG, 34.5 mm layer thickness
The Hellma Large Cuvette 740.000-OG, 34.5 mm layer thickness is a high-quality cuvette that has been specially developed for demanding optical examinations in the laboratory. With its generous volume of 100 milliliters and a layer thickness of 34.5 millimeters, it is ideal for larger sample quantities and also allows microscopic observations directly in the cuvette chamber. Compared to other cuvettes on the market, this model offers exceptional precision and high optical purity for reliable and reproducible measurement data. Thanks to the optical glass used, which covers the wavelength range from 360 nm to 2500 nm, a wide variety of substances can be analyzed in different light ranges. Especially in laboratory environments where versatile measurement tasks are the order of the day, this cuvette proves to be extremely flexible and user-friendly.
Precise properties and versatile applications
This cuvette is made of special optical glass that ensures excellent light transmission and minimizes interference. Stable and consistent light guidance is essential, especially for sensitive photometric or spectroscopic measurements, in order to guarantee relevant success factors such as linear measuring ranges, low stray light components, and interference-free signals. Since the wavelength range extends to 2500 nm, users can work with various analysis techniques, for example in biotechnology, chemical analysis, or quality control.
In addition, the internal geometry of the cuvette is designed to support homogeneous distribution of the sample, even in complex applications. This not only promotes accurate results, but also facilitates cleaning. Another practical feature is that there is no lid. This allows quick intervention—for example, to mix samples or add additional reagents during the measurement—and also improves the possibility of microscopic control. The generous internal dimensions (97 x 44 x 34.5 mm) provide sufficient space to integrate specialized accessories or larger experimental setups.
Technical data at a glance
- Layer thickness: 34.5 mm (+ 0.2)
- Type: 740,000-OG
- Material color code: OG (optical glass, 360 nm – 2500 nm)
- Volume: 100,000 µl
- External dimensions: 100 x 50 x 39.5 mm
- Internal dimensions: 97 x 44 x 34.5 mm
- No lid for flexible access
The remaining specifications result from the robust design and precise manufacturing, including tight tolerances, which promote consistently reliable measurement results. Certifications and standards such as DIN and CE can play a role here, giving customers additional assurance regarding material and manufacturing quality. ISO 9001 quality management is often used to ensure consistently high standards. Hellma, in particular, is a renowned manufacturer known for implementing strict quality controls in its manufacturing processes.
Practical application examples
- Photometric determinations in chemical analysis: Due to the generous layer thickness, substances can be determined with sufficient sensitivity even at minimal concentrations.
- Biotechnological sample analyses and cultivations: Thanks to the large internal dimensions, microorganisms can be cultivated and continuously examined.
- Spectroscopic measurements at different wavelengths: The high-quality optical glass covers an extensive UV-VIS and NIR range, allowing differentiated insights into complex mixtures of substances.
- Microscopic examinations: Since the cuvette is supplied without a fixed lid, direct observation of cell cultures or particle suspensions under the microscope is possible.
Depending on the industry and requirements, proteins or dyes in aqueous solutions can be measured, for example, but organic solvents or suspensions are also often the focus.
FAQ
What is the best way to clean the cuvette?
A gentle cleaning method is to rinse with distilled water or suitable solvents, followed by drying in dust-free conditions. Mild cleaning agents or disinfectants can help with stubborn residues, but aggressive chemicals should be avoided in order to protect the optical surfaces. How can I ensure that the measurement is not affected by scattered light?
It is important that the cuvette is clean both inside and outside. Any remaining streaks or residues can scatter light. Also, make sure that the cuvette is correctly aligned in the measuring device and check that your measurement setup (e.g., contact pressure or fixation) is optimal.
Which substances can be analyzed in the cuvette?
Basically, any substances that can be measured in the specified wavelength range from 360 nm to 2500 nm and are compatible with the optical glass material. This includes aqueous and often also organic solutions. For particularly aggressive chemicals, it is advisable to carry out a resistance test in advance.
Are there any special features for microscopy applications?
Since no lid is included in the scope of delivery and the cuvette is large on the inside, samples can be easily viewed under a microscope. It is important to pay attention to the focus and ensure stable positioning so that no shaking affects the measurement result.
Conclusion
With its high-quality optical glass, generous dimensions, and wide wavelength range, this cuvette provides an ideal basis for a wide variety of measurement techniques in the laboratory. Thanks to its high-quality workmanship, precise tolerances, and the possibility of microscopic examination, it is one of the most reliable solutions for quantitative analysis. The layer thickness of 34.5 mm is ideal for sensitive measurements, while the large volume allows sufficient flexibility for different sample types. It really comes into its own in research and development laboratories, but also in routine laboratories in the chemical, biotechnology, and pharmaceutical industries, proving to be a long-lasting investment for accurate and reproducible results.
