Important information for customers from the EU

Please note that the Principality of Liechtenstein is not a member of the EU. For this reason, the following points must be observed:

TVA – Value Added Tax

Our prices are exclusive of VAT and will be shipped as such. I.e. concretely, you have to pay the value added tax (TVA) when importing into your country (an EU country). You can reclaim these taxes from your state.

Customs clearance – EORI number required

All companies need a so-called EORI number (Economic Operator’s Registration and Identification) to import from non-EU countries. This number is used for your identification as well as for the automated customs clearance, i.e. for the import into your country (an EU country).

The respective national issuing office of the EORI number can be found on the website of the European Union. In Germany and Austria, the EORI number is assigned by customs.

Fluorescence Filters

For fluorescence-optical investigations, special filters are required which spectrally separate the absorption range from the emission range of the respective fluorescent dye in a clean way.

An excitation filter therefore only allows the wavelengths used to excite the dye to pass and blocks the emission wavelength range as completely as possible.

The opposite is achieved by the observation filter. The spectral separation is achieved in both cases by very steep edges and an extraordinarily high blocking.


  • Flow cytometry
  • Drug development
  • Gene analysis
  • Other fluorescence-based measuring devices


  • Highest transmission
  • Excellent blocking
  • No autofluorescence
  • Very steep edges
  • High signal to noise ratio: S/N > 100’000 : 1
  • Very hard, abrasion-free, environmentally stable layers
  • Low thermal displacement: < 0.0015 nm/K
  • Excellent long-term stability

You are interested in Fluorescence Filters?

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