The carbon and nitrogen content of soil is directly related to its ability to support healthy plant growth. The vario MAX cube is specially suited to soil analysis. Capable of measuring up to 5 g of soil means that sample inhomogeneity is not an issue. Automated ash removal reduces maintenance requirements and increases productivity. A unique purge-and-trap gas separation system means that even C:N ratios of 7000:1 are perfectly resolved. Additional options, such as using argon as the carrier gas and measuring sulfur or TOC, make the vario MAX cube a versatile, robust solution for soil elemental analysis.
The rapid MAX N exceed represents the industry standard in ease-of-use and analysis throughput while maintaining unrivaled analytical performance. With sample sizes up to 5 grams of soil or 1 gram of organic material, sample preparation in many cases is as easy as weighing the sample into the reusable steel crucibles. The upright crucible design means that measuring up to 5 mL of liquid sample is also no problem and requires no addition materials or handling. With a robust autosampler and a large 90-position sample tray, measurements can easily and reliably be setup to run overnight for maximum sample throughput. Even with larger sample sizes, the EAS REDUCTOR® in a rapid MAX N exceed can analyze over 1000 samples before needing replacing. Additional flexibility and cost savings are realized with the option of argon as carrier gas.
With the reduction of external sulfur sources, maintaining proper sulfur levels in soil by fertilization is becoming more important. The vario MACRO cube is the world’s only macro sample (up to 1 g) analyzer capable of measuring carbon, hydrogen, nitrogen, and sulfur all in one sample. The wide dynamic range of the thermal conductivity detector enables the accurate determination of sulfur from a fraction of a percent up to 100 % with just one calibration range. Whether interested in just sulfur or any combination of CHNS, the vario MACRO cube provides timely, reliable results with little maintenance, saving you time and money.
The total organic carbon (TOC) analysis provides essential information about microbiological activity and organic matter to characterize and evaluate soil and sediment. Soils can also contain a large amount of biologically inaccessible inorganic carbon (TIC), typically in the form of carbonates. Elemental carbon (ROC) is a further common source of carbon, which is also not bio-available. Separately measuring this third carbon fraction can give a much more accurate determination of bio-available, and thus environmentally relevant, TOC compared to acidification method. The revolutionary soli TOC cube measures these three carbon fractions in soils and other solids in a single sample without the need for corrosive acids, providing reliable results with minimal user input.
Our customers use our instruments to do some amazing research in the soil & plant science application field. To show you how they perform their research and how they use our IRMS instruments, we have collected a range of peer-reviewed publications which cite our products. You can find the citations below and then follow the links to the publishing journal should you wish to download the publication.
If you would like to investigate our available citations in more detail, or email the citation list to yourself or your colleagues then take a look at our full citation database.