Cuvettes

Hellma Cuvettes (Cells) are manufactured from various types of glass. The most important criterion for the choice of a particular type of glass is the spectral range for which the cuvette is intended. Coloured logos are fused onto each Hellma Analytics cuvette, thus indicating the spectral range over which the Cuvettes can be used.

In general the glass materials that is used is divided into two groups: quartz and optical glass.
Quartz consists exclusively of silicon dioxide (SiO2) and shows some remarkable properties:

  • Quartz displays a high UV transmission, in highly purified synthetic quartz down to well below 200 nm. 
  • The thermal expansion of quartz is extremely low, its coefficient of thermal expansion being 6 x 10-7K-1 between 20 °C and 300 °C. 
  • Quartz is chemically very resistant and maintains its shape, even at high temperatures up to approximately 1000 °C. 
Common criteria for all types of optical glass are: 
  • That the cells made from it are used in the visible range of the spectrum 
  • That the glasses we use are characterised by relatively low values of refractive index and dispersion 
  • That they display good resistance to chemicals.

Absorption Cells,  Flow-Through Cells, 178.710-OS, 10 mm, Z 15

Absorption Cells, Flow-Through Cells, 178.710-OS, 10 mm, Z 15

Hellma Absorption Cells, Cells for Flow-Through Measurements- compact, with 2 screw connectors M 6 x..
Polypropylene cell stand for 16 cells with 10 mm light path, Dimensions (L x W x H): 210 mm x 70 mm x 35 mm

Polypropylene cell stand for 16 cells with 10 mm light path, Dimensions (L x W x H): 210 mm x 70 mm x 35 mm

Polypropylene cell stand for 16 cells with 10 mm light path, Dimensions (L x W x H): 210 mm x 70 mm ..
Recertifying Didymium Glass Filter 666-F7W for checking wavelength accuracy

Recertifying Didymium Glass Filter 666-F7W for checking wavelength accuracy

Recertifying Didymium Glass Filter 666-F7W for checking wavelength accuracy..
Recertifying Glass Filter Set 666-S002 (F2, F3, F4) for checking photometric accuracy

Recertifying Glass Filter Set 666-S002 (F2, F3, F4) for checking photometric accuracy

Recertifying Glass Filter Set 666-S002 (F2, F3, F4) for checking photometric accuracy..
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