Inhaltsverzeichnis
REFLEX Analytical offers a comprehensive selection of UV-Vis-NIR cuvettes and cells precision fabricated from high quality UV Quartz, IR Quartz and glass materials. Most absorption cuvettes have two clear windows to allow maximum light transmittance through the sample linearly. Contrarily, scattering and fluorescence applications require the signal to be measured at 90 degrees to the light beam. For example, fluorescence cuvettes have all four sides polished to help with successful fluorescence experiments.
- Plastic cuvettes with a usable wavelength range of 380–780nm may be disposed of after use, preventing contamination from re-use.
- If you can’t find what you are looking for, we can also supply custom cuvettes to match your design and exact specifications.
- Featuring light transmissions ranging from 180 nm to 2000 nm and manufactured from high quality materials, cuvettes from Pipette.com are the ideal choice.
- You can achieve a ten-times reduction in absorbance by simply swapping cuvettes, rather than wasting time and solvent by needing to dilute your solutions.
The cuvette path length is the interior distance between a cuvette’s parallel optical windows that a particular wavelength of light must traverse through. Spectrometers have a standard chamber size in which the cuvette is placed during chemical analysis. That’s why it is essential to select a cuvette that will accommodate your spectrometer’s chamber size. Glass cells are most common in school and college undergraduate laboratories because of their lower cost. Optical glass shows absorbance throughout the visible and IR regions extending from nearly 340 nm to 2500nm covering majority of organic and in inorganic species. However, glass absorbs strongly in UV region and its application is not recommended for wavelengths below 340 nm.
Uv
If solution is transferred into a cuvette using a Pasteur pipette containing air, bubbles may form inside the cuvette, reducing the purity of a solution and scattering light beams. The solution contained in the cuvette should be high enough to be in the path of the light source. In case the sample needs incubation at a high temperature, care must be taken to avoid temperatures too hot for the cuvette. The new ZS Xplorer software will help you determine the appropriate temperature limits and measurement types based on the specific cell selection as highlighted in red below.
Lab4us Quartz Micro Cuvette Cell Black Walls
Please select from the drop down menus and assure the part number's last digit corresponds to the desired pathlength. For example, part number 1-G-10 corresponds to a 10mm pathlength for a Type 1 Glass Cell. REFLEX Analytical welcomes your contact if assistance is required. To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch.
Biochrome Scientific
Semi-micro cuvettes hold a measuring volume of 0.35 to 3.5 mL. To hold the smaller sample, these cuvettes must use a spacer, mount or standard cuvette exterior with a tapered interior. A blank reference measurement provides highly reliable results but for the purpose cell pair with optically volume of a cuvette matched windows should be used to prevent any absorbance mismatches. In 1934, James Franklin Hyde created a combined silica cell, which was free from other extraneous elements, as a liquefying technique of other glass products. In the 1950s, Starna Ltd. improved the method to completely melt a segment of glass using heat without deforming its shape. This innovation has altered the production of inert cuvettes without any thermosetting resin.