Measuring Cells and replacement parts for the analysis of liquids, solids and gasses
We offer a large assortment of ATR-crystals and a range of standard gas cells for use in the field of spectroscopy.
We also offer both dismantleable and sealed cuvettes. For decades, cuvettes have been used for the optical analysis of liquids, oils and pastes. Cuvettes consist of a metal frame and two crystal windows (sometimes Fused Silica windows). The substance to be measured is held between the two windows. To prevent any leakage all lead seals are covered with an amalgamating solution. Where the substance to be measured is viscous, seals made of Teflon are sufficient. The thickness of the substance to be measured is adjusted using a spacer.
We can construct the cuvettes in house to your specification or supply the parts, allowing you to assemble the cuvettes using the following Instructions.
| Cuvettes |
We primarily use Teflon seals for dismantleable cuvettes, as these are easier to handle and simple to disassemble. Sealed cuvettes with a pre-determined depth are sealed using lead seals, which are then covered in an amalgamating solution. The seals are then checked and the exact depth of the cuvette measured with the spectrometer. We have spacers in the following standard sizes: |
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Spacers |
22mm x 38,5mm |
40mm ø |
25mm ø |
23mm x 41mm |
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Teflon: 100, 170, 200, 500, 1000μm |
Lead: 25,100, 200, 500 μm |
Teflon: |
Teflon: 50, 100, 200, 500, 1000 μm (rounded down) |
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| Gas Cells |
Gas cells demonstrate a complex absorption spectrum. The gas molecules have several absorption lines as a result of rotational-vibrational transitions, which can be used as reference points for light waves in the 0.5 µm- 10µm spectrum. The gases used are of the highest purity and the gas cells are filled to pre-determined pressure levels . Gases can be mixed to achieve a wider reference band. We provide the following gas cells as standard: |
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CO |
NO |
CH4 |
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This symbol denotes crystal grown in-house.