944 Professional UV/VIS Detector Vario
The 944 Professional UV/VIS Detector Vario is the intelligent UV/VIS detector from Metrohm. It permits a secure and reliable quantification of substances active in the ultraviolet or visible range. Detection takes place via a Diode Array. The 944 Professional UV/VIS Detector Vario enables reliable and accurate quantification of substances that absorb light in the ultraviolet or visible range. The instrument is operated by t…
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The 944 Professional UV/VIS Detector Vario is the intelligent UV/VIS detector from Metrohm. It permits a secure and reliable quantification of substances active in the ultraviolet or visible range. Detection takes place via a Diode Array.
The 944 Professional UV/VIS Detector Vario enables reliable and accurate quantification of substances that absorb light in the ultraviolet or visible range. The instrument is operated by the user-friendly MagIC Net software and allows a wide variety of analytes to be determined by direct or indirect detection.
Features:
- UV/VIS detector equipped with diode array
- Up to 8 variable wavelengths
- Variable band widths and integration times
- Spectrum recording possible at any time
- User-friendly operation thanks to MagIC Net
- Many options for data evaluation and representation
- Universal use, many combination possibilities
- Robust, heatable reactor for precolumn and postcolumn derivatizations
- iReactor (intelligent derivatization reactor)
- High precision and measuring accuracy
- Low detection limits even in complex matrices
Applications:
- Nitrogen compounds NO2 – , NO3 – , ...
- Sulfur compounds: S2–, S2O3 2–, SO3 2–, ...
- Halogen compounds: IO3 – , Br– , I– , ...
- Organic substances:
- organic acids
- vitamins
- sweeteners
- caffeine, melamine - Other ions: CrO4 2–, SCN– , ...
Maleic and Kojic Acid in Starch Applying UV/VIS Detection After Ion-Exclusion Chromatography
Maleic acid findings in Asian food caused the recall of a lot of starch-containing food products in Asia. Long-term consumption of maleic acid can cause kidney problems. The cyclic kojic acid, on the other hand, is approved as an additive in food and cosmetics to preserve or to bleach, respectively. In this application note, both acids are determined in a single analysis using the 944 Professional UV/VIS Detector Vario and the 863 Compact IC Autosampler from Metrohm.
