Wilten Instruments has a wide range of instruments. Because of the variety of options on some products we are not able to mention all of them on our website. Complete information is available on demand.
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Vicinal diketones and bitter units

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NEW Tests

Analysis according to MEBAK, new rapid tests for VDK and bitter units.

New in our portfolio are the vicinal diketone and bitter units tests. With the NANOCOLOR® Bitter Units tubetest, the bitter substances in beer, primarily iso‑α‑acids, are extracted from a beer sample using isooctane. They are then measured in a 10 mm quartz cuvette in the UV range at 275 nm.

  • Fastest determination of bitter units with a reaction time of 80 sec.
  • Easier handling compared to MEBAK
  • Storable zero: Reagent blank value can be stored in the photometer

Diacetyl can be determined quickly and easily with the NANOCOLOR® Vicinal Diketones tube test. The diketones react with a phenylenediamine derivative to form a quinoxaline derivative. This can be evaluated photometrically at 335 nm. For the determination of vicinal diketones according to MEBAK or with the tube test NANOCOLOR® Vicinal Diketones, steam distillation is necessary as sample preparation. We have compiled the test setup and the required materials in a customer information leaflet.

  • Simple and fast determination of vicinal diketonen
  • Measurement of up to 40 samples in parallel possible
  • Steam distillation as sample preparation necessary – customer information available
  • The usual simple tube test

We have an extensive range of tests. Are you looking for a specific test or do you need more information? Contact us, we can certainly help you.