The Dumas method has several advantages over the Kjeldahl method: it is much faster, with much lower operating costs, no real safety issues, and no toxic waste produced. However, there is a debate over which of the two main approaches to the Dumas method is better: a vertical or a horizontal combustion furnace. Determined to settle the question on which method is more precise and offers the most advantages, LECO chemists analyzed many sample types in both an FP828 and an FP928.
An accurate determination of moisture content in food or agricultural products provides important information related to the food quality and safety (texture, taste, microbial stability). Moisture is also a key variable used to calculate a product’s purity, yield, and /or resulting constituent analysis on a dry basis.
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Der TGM800 bietet eine hochpräzise, automatisierte Lösung zur Feuchtigkeitsbestimmung und ersetzt die langsame, mühsame, traditionelle Trocknungsverlusttechnik durch eine automatisierte Primärmethode. Das Design bietet eine Reihe zeitsparender Funktionen, z. B. die automatische Messung von bis zu 16 Proben gleichzeitig mit optionaler Erkennung des Trocknungszeitpunkts und eine intuitive Touchscreen-Software mit flexiblen Methodeneinstellungen.
Total sulfur value is an important characterisation measurement for coal, coke, fuel materials, and a wide variety of other organic materials. It is considered to be part of the ultimate analysis parameters (determination of carbon, hydrogen, nitrogen, sulfur, and ash with oxygen calculation by difference). The total sulfur value is a primary parameter used for assessing the quality of a fuel, calculating coal and coke preparation and cleaning processes, and the emissions potential of the fuel. The SC832 Series will bring productivity, precision, and progress to your lab when determining the sulfur and carbon content of your samples.
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► CNS928 | Determination of Carbon, Nitrogen and Sulfur in Soil
► CN928 | Determination of Carbon/Nitrogen in Soils and Plant Tissue
► SC832 Series | Sulfur and Carbon Determination in Soil
► RC612 Series | Temperature-Dependent Determination of Total Organic Carbon (TOC) in Soil
► TGA801 | Determination of Moisture and Ash in Soil
► TGM800/TGA801 | Determination of Moisture in Soil
LECO hosted the LA2PC // Analytical Applications Poster Competition with the aim of improving our understanding and knowledge of LECO users’ work and research. This was a great opportunity to learn more from our users and introduce their work with LECO instruments to a wider base. LECO is proud that so many excellent posters were submitted. All entries are displayed in our poster gallery.
How efficient is your workflow when it comes to food samples? Are you sure you're seeing everything your sample has to offer? Learn how LECO has been expanding what is possible when it comes to food safety analyses with this free series of webinars.
All our webinars will be approximately 30 minutes long with a Q&A session at the ends. Register for any or all that interest you!
Well-balanced crops require well-balanced soil. While carbon may be the most essential element for organic life, the right ratio of nitrogen and sulfur in the soil along with the carbon can really influence the speed and strength of plant development and growth. With a macro combustion carbon, nitrogen, and sulfur determinator such as LECO's CNS928, those ratios can be discovered easily through fast and precise analysis.
There are countless fertilizers that can be applied to change the ratio of elements in soil, but without knowing the baseline for your soil, you have no practical way of knowing what it needs. LECO's CNS928 can take some of the uncertainty out of soil management.
While helium remains the inert gas of choice for elemental analysis, supply is limited, driving cost up. The CNS928 is designed to support the use of either helium or argon as a carrier gas. The thermal conductivity difference between argon and nitrogen is not as great as the thermal conductivity difference between helium and nitrogen, so the detector is inherently less sensitive when using argon for nitrogen determination, but the CNS928 does offer the option of using a larger 10 cm3 aliquot loop. The 10 cm3 aliquot loop helps to overcome the lower sensitivity of argon carrier gas by optimizing the system for the lowest nitrogen range and provides the best precision.
To see how the CNS928 handles carbon, nitrogen, and sulfur determination with various combinations of carrier gases and aliquot loop sizes, read the app note.