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UV-VIS Spectrophotometers
Spectrophotometer Cells
Technical Details and Illustrations below
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Spectronic cells and cuvettes meet the most exacting requirements of modern spectrophotometric procedures. All spectrophotometer cells are completely fused without the use of low melting intermediate glasses or cements. In other words, quartz is fused to quartz and glass is fused to glass. This eliminates strains due to differences in coefficients of expansion found in cells fused with intermediate low melting temperature glasses. Because of the fused construction, the window joints of Spectronic spectrophotometer cells are unaffected by all types of cleaning solutions. |
General specifications |
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Windows parallel to: |
better than 3 minutes of arc better than 4 Newton fringes 60/40 scratch/dig 20/10 scratch/dig |
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Material |
Path lengths |
Tolerance |
Glass |
less than 10mm 10 to 30mm 40 to 100mm up to 20mm 30 to 100mm 0.01 to 0.05mm 0.1 to 0.4mm 0.5 to 100mm |
± 0.02mm ± 0.1mm ± 0.2mm ± 0.01mm ± 0.02mm ± 0.002mm ± 0.005mm ± 0.01mm |
Standard window thickness is 1.25mm, polished to better than 4 Newton Fringes per centimetre in the viewing area, typically flat to better than 1 micron (0.001mm) over the window area. |
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Window material transmission properties |
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| Registered Trade Marks: INFRASIL® & Suprasil® 300 Heraeus Quarzglas GmbH, Hanau / Main, Germany. SPECTROSIL®, Thermal Syndicate, England. PYREX® Corning Glass Works, U.S.A. The above information illustrates the approximate transmission ranges of the guaranteed materials used in the production of Starna cells. The traces are for a thickness of 5 mm, which is approximately double the total thickness of the windows that are used in the construction of most cells. |
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Material specifications |
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| Optiglass offer five primary window materials, Optical Glass (G) and Special Optical Glass (SOG) for the visible range. Spectrosil® Quartz (Q) or equivalent for the far UV range, Infrasil® Quartz (I) or equivalent for the near infra-red (IR) as well as Suprasil® 300 (SX) or equivalent which transmits from the far UV to the near infra-red. Other window materials are also available such as Pyrex (PX) and UV Silica (HH). If a specific window material is required and is not shown in this catalogue please contact us for availability. All materials used are fully guaranteed to transmit greater than 80% over the following usable wavelength range: |
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| Optical Glass Special Optical Glass Pyrex UV Silica Spectrosil® Quartz Infrasil® Suprasil® 300 Quartz |
G SOG PX HH Q I SX |
334 through 2500 nm 320 through 2500 nm 325 through 2500 nm 230 through 2500 nm 190 through 2700 nm 220 through 3800 nm 190 through 3500 nm |
| For fluorescent applications Spectrosil® is the recommended window material, as it does not exhibit any background fluorescence. Some other materials, especially glass and lower grades of quartz may have some background fluorescence. The meticulous care taken in the quality of the polishing and unique construction of regular Starna® quartz fluorescent cells brings them within tolerances which are sufficiently stringent for them to be used in laser applications. These techniques are particularly relevant in the manufacture of much larger Ultra High Vacuum (UHV) cells. |
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Spectrophotometer Cells the following are standard cuvettes we supply on a regular basis, if you require any other special cells. Please contact sales@spectronic.co.uk
 Type 1 Standard Spectrocell |
 Type 3 Standard Fluorocell |
 Type 9 Semi Mic Spectrocell |
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Cell with fitted cover.Satin finish on 2 sides. Vol. of 10mm P.L. cell is 3.5ml
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Cell with fitted cover Polished on 4 sides & bottom. Vol. of 10mm P.L. cell is 3.5ml
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Semi-micro cell with fitted cover.
Glass,Quartz,or Infrasil |
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 Type 9 BM SemiMic Spectrocell |
 Type 17 Micro Spectrocell |
 Type 17 BM Micro Spectrocell |
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Semi micro spectrophotometer Cell masked in Black Quartz with fitted cover.Inside width 4mm. Vol. of 10mm P.L. cell is 1.4ml
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Micro Cell with fitted cover Polished on two sides half height
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Semi-micro cell with fitted cover.
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| Type 18 BM Micro Spectrocell |
 Type 21 Standard Spectrocell |
 Type 75 BM flowcell Spectrocell |
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Semi micro spectrophotometer Cell masked in Black Quartz with fitted cover.Inside width 4mm Vol. of 10mm P.L. cell is 0.7ml
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Same as Type 1, but with
Manufactured in
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Continuous flow-through ultra-micro. Two windows polished. Internal width of sample chamber: 3 mm diameter. Manufactured in
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