Hellma Macro Cell 165-QS, 10 mm layer thickness
This macro cuvette is particularly suitable for precise absorption measurements in research and routine analyses and is characterized by its high optical quality. It enables the exact quantification of various samples and is therefore valued in many laboratories. Compared to other cuvettes, it scores particularly well with its temperature-stabilized design and optimal transmission across the entire UV and visible spectral range.
Performance characteristics and design
The macro cuvette impresses with its robust construction made of high-quality quartz glass, which allows wavelengths from 200 nm to 2500 nm to pass through with virtually no loss. Its practical shape makes it easy to fill and safe to handle – a significant advantage when changing samples frequently in everyday laboratory work. These properties make it ideal for spectrophotometric measurements that require maximum precision and the best possible reproducibility of results.
Important technical data at a glance: • Type: 165-QS
• Quartz glass (200 nm – 2500 nm)
• Layer thickness: 10 mm
• Volume: 800 µl
• Outer diameter: 22 mm
• Inner diameter: 10 mm
• Outer depth: 12.5 mm
• Number of windows: 2
The temperature connection allows for controlled temperature control of the sample: Temperature-sensitive substances or enzymes in particular benefit from this option. Equally practical is the stopper, which can be used to securely close the cuvette – ideal for samples that need to be protected from moisture or contamination. The slim design with an inner diameter of 10 mm helps to distribute the sample evenly and makes cleaning easier after the measurements have been completed.
With its specific design, this temperature-controlled laboratory solution is suitable for use in automated measurement systems and in demanding environments where chemical resistance and consistent measurement performance are paramount. Thanks to its low dead volume, reliable analysis is guaranteed even with valuable sample materials or those available only in small quantities.
Certifications and standards
Hellma pays attention to high quality in its manufacturing and subjects its cuvettes to comprehensive checks in accordance with relevant ISO standards. Many products in the Hellma range also carry CE markings, which provide additional safety and conformity with European directives. The quartz glass used meets strict purity requirements and is characterized by its low impurity content, resulting in consistent and reliable optical transparency.
Application examples
-
Determination of enzyme activities
In biochemical laboratories, even sensitive enzyme samples can be analyzed with this cuvette, as the temperature stabilization compensates for thermal fluctuations. This minimizes deviations in enzyme activity.
-
UV/VIS analysis in pharmaceuticals
The recording of UV/VIS spectra in pharmaceutical quality assurance benefits from the high transmission of quartz glass. Active ingredients such as ibuprofen, paracetamol, or ceftriaxone can thus be quantified efficiently.
-
Research in molecular biology
Precise light transmission is crucial for DNA, RNA, and protein analyses. With the reliable Hellma cuvette, the purity and concentration of biomolecules can be determined exactly.
-
Quality control in the chemical industry
Whether for solution or dye analysis, the consistent optics and robust design enable accurate measurements of substances such as metal complexes, organic pigments, or surfactants with consistent reproducibility.
FAQs
What is the best way to clean the cuvette?
First rinse it with deionized water or a suitable solvent for the sample residues. We then recommend cleaning it with a mild detergent and rinsing it thoroughly. Dry the cuvette carefully with compressed air or at room temperature.
Can I use the temperature control with any spectrophotometer?
As long as the external temperature control unit is compatible and the appropriate connections are available, the cuvette can be used in most spectrophotometer systems. Ensure that the stopper is sealed tightly to ensure stable temperature transfer.
Which substances are unsuitable for quartz glass?
Although quartz glass is highly resistant to chemicals, strongly alkaline solutions or hydrofluoric acid can cause damage. Therefore, always check the compatibility of your solvent.
How can I prevent measurement errors caused by stray light?
Ensure that the cuvette is correctly aligned and always keep the outside free of fingerprints or scratches. Using a lint-free cloth to polish the windows ensures reliable light transmission and minimizes stray light.
Conclusion
This model has all the relevant features to ensure consistently accurate absorption measurements in professional laboratory applications. From the durability of the quartz glass to the temperature connections and the practical stopper design, users get a well-thought-out solution for a wide range of measurement tasks. The clear transparency in the UV and visible range, combined with a low dead volume and high-quality materials, makes this cuvette a preferred instrument in analytical chemistry, biochemistry, and pharmacology. The manufacturer's high quality and safety standards are an additional plus point, making it ideal for routine testing as well as demanding research projects.
