Laboratory Products
The Analyser Thats Ready for the Toughest of Challenges
Sep 22 2006
TOC and TN, liquids and solids, particle and salt-containing samples - all of them are no problem for the IL 550 TOC-TN with high-temperature digestion. Its particle tolerance is excellent. The injection is carried out septum-free, without tubes or valves, directly into the reactor tube. The pneumatic port, which hermetically encloses the syringe, makes this possible. The needle remains in the furnace during combustion, and is then automatically rinsed. In this way, any carry-over is avoided. The variable injection volume of 10 to 500 µl enables a volume-dependent calibration to be carried out without time-consuming preparation of different standards. The digestion rates are excellent. A furnace temperature of 950°C and the optimised composition of the catalyst packing, enable particle-containing samples as well as the most poorly digestible substances to be completely oxidised. The long service life of the catalyst is assured, even when it is exposed to high salt concentrations and aggressive samples. Moreover, the VITA software ensures long-term stable calibration. The wide measuring range of 0.05-30,000 mg/l TOC and 0.1-100 mg/l TN makes precise analysis possible without dilution.
For the serial analysis of solids, the HSC 1300 module is used. The oxidation takes place at 1300°C in a ceramic reaction tube without the aid of a catalyst. A sample port (laminar air flow) prevents contamination from the air. The combustion can be observed. High initial sample weights can be accommodated - up to 3 g - so that reliable results are obtained, even from non-homogeneous samples.
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ILM 49.5 July
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