TOC analyzers from Elementar based on catalytic high-temperature combustion have been providing remarkable performance in environmental and wastewater laboratories for decades. Now Elementar’s new TOC/TNb analyzer, enviro TOC, combines the technical know-how of its predecessor, the vario TOC select, with innovative technologies:
the powerful furnace, variable mode changes, real matrix separation with SALTTRAP and the stable, wide-range IR are complemented by a completely new autosampler system and a novel chemiluminescence detection system. This makes enviro TOC the ideal, future-oriented instrument for flexible and efficient TOC and TNb determination in environmental and wastewater samples.
The analysis of TOC in wastewater to assess organic contamination or to evaluate the cleaning efficiency of sewage treatment plants is an international standard procedure. Also, TOC and TNb determination are indispensable for monitoring organic pollution and nitrogen load in surface waters.
The enviro TOC is tailored to the analysis of TOC, NPOC, TC, TIC, DOC, POC or TNb in these matrices. Samples are injected with a 60-position autosampler. Integrated rinsing functions minimize carryover during the analysis of particle-containing samples. In addition, the measurement of soil samples or waste is also possible without time-consuming instrument modifications. As one of the few analyzers on the market, enviro TOC offers fully automatic TOC determination in solid and liquid samples with one system.
The enviro TOC enables simultaneous TNb determination either using the proven EC cell technology or a novel, integrated chemiluminescence detector (CLD). The innovative CLD concept provides stable conditions for NO measurement in the carrier gas. Consequently, the NO signal is linearly correlated with the TNb concentration over a large measurement range. The built-in CLD does not require additional laboratory space and delivers extremely stable values, which simplifies calibration as well as result evaluation.
During the combustion of salt-containing samples, salts crystallize in the combustion tube. If the crystallization occurs directly on the quartz glass or in the catalyst, their lifetime is significantly reduced. The unique SALTTRAP of the enviro TOC guarantees user-friendly maintenance intervals of the combustion tube and the catalyst even for concentrated salt solutions, thus saving running costs during operation. Depending on the nature of the salt, a slight decrease in crystallization can be achieved by reducing the combustion temperature. However, only SALTTRAP guarantees truly effective glass corrosion protection, because the salts are trapped directly at the point where they melt.
The user-friendly maintenance concept of the enviro TOC ensures the most efficient routine analysis: Our goal is that the maximum lifetime of the instrument can be reached with minimum maintenance effort. Consequently, all consumables can be easily replaced by the user. Clearly arranged, easily accessible components guarantee that most maintenance work can be carried out independently within a very short time. This saves running costs and avoids downtime of the instrument.
High-temperature catalytic carbon oxidation up to 1200 °C and CO2 detection with NDIR for TOC, NPOC, TC, TIC, POC (VOC), DOC. TNb determination simultaneously with CLD or EC cell (option).
Customized, integrated detectors for CO2 and NO determination. Variable sample volumes allow multipoint calibration from a single standard solution and avoid dilution errors. Extraordinary linearity over a large calibration range.
Modular concept for liquids and solids analysis
Automatic sample feeders for liquids and solids, alternatively cost-efficient solutions with manual sample change. Quick and easy exchangeable. Can be upgraded at any time.
The innovative combustion tube concept enables real matrix separation and offers maximum protection of the combustion tube. Designed for analyses of salt-containing samples, particles or other complicated sample matrices.
Software with high performance and maximum flexibility
Instrument control with a Windows standard PC, control and evaluation software with flexible calibration features, advanced math operations, and intuitive troubleshooting. Integrated maintenance software and comprehensive help menu.
Working temperatures up to 1200 °C. Suitable and flexible temperature settings for salt-containing solutions (~720-750 °C), particle-containing solutions (850 °C), and solids (> 900 °C) with one furnace.
Easy, compact, economical
The unique instrument concept is characterized by easy handling and optimized for low maintenance costs – with high flexibility and analytical performance.
Autosampler for liquids
Fully automated, 60-position sampler for 40 ml EPA vials for liquids, fully integrated into the instrument. All positions can be stirred, automatically acidified, and purged. Septa are available. Alternatively cost-efficient solution with manual sample change. Quick and easy exchangeable with solids sample feeder.
Fully automation for solids analysis with sample feeder for 60, 80 (max. weight 1 g*) or 120 samples (max. weight 300 mg*). Alternatively, cost-efficient solution with manual sample change available. Quick and easy exchangeable with liquids sample feeding.
TIC-determination in solids, soliTIC
Attachment for safe acid digestion of ground solids. Release of carbonates (TIC) as CO2 for the measurement with the detector of the attached enviro TOC. Convenient guidance via the software.
* depending on sample matrix
Choice of different, integrated detectors for the simultaneous determination of total bound nitrogen (TNb).
Choice of additional helpful tools and accessories is available, such as certified liquid TOC standards, combustion tube stand or a single standard Teflon® tray for easy handling and organization of samples.
We offer all consumables required for the operation of our analyzers. These include:
We do not compromise on the quality of our parts and chemicals - this is the prerequisite of the guaranteed long lifespan our instruments offer. When using original consumables from Elementar, a 10-year warranty on the high-temperature combustion furnace is offered.