Over the last thirty years, the Dumas combustion method for analyzing protein content in food has been gaining popularity against the classic Kjeldahl wet chemical digestion and titration method. 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.
LECO Africa 828-series posts (Page 1 of 8)
A web of factors contributes to a good crop, but the importance of carbon and nitrogen cannot be overstated. From soil to fertilizer to the plant matter itself, the mix of carbon and nitrogen play key roles in the development and growth of the plant. Knowing the carbon and nitrogen levels in every aspect of your field can help you maintain quality control over the end result.
98% of the world's soybean meal is used as animal feed, principally as a protein supplement. With the importance of protein in animal growth and development, knowing what's in your soybean meal is vitally important. There is more to protein than the crude protein concentration number, however. If an animal can't digest the protein, if it isn't a 'soluble' protein, then it doesn't actually provide the nutritional value needed. LECO's FP828 is capable of both total and soluble protein analyses.
LECO announces the addition of hydrogen analysis capabilities to the 828 series, which will transform the way users determine carbon, hydrogen, and nitrogen in a variety of petrochemical and other organic materials. The CHN828 maintains the core capabilities and performance of previous generations of LECO macro combustion instruments while possessing key improvements in throughput, uptime, and reliability. By incorporating state-of-the-art hardware and an on-board touch-screen software platform with rapid analysis times, the CHN828 operates at a low cost-per-analysis and allows users to easily handle the most demanding sample applications.
Why do you use the sample container that you use? Is it something you've ever thought about? Sample containers and crucibles are both wonderfully simple, to hold your sample without influencing the analysis, and wonderfully complex... to hold your sample without influencing the analysis.
But are you using the best container for your type of sample?
Did you catch our recent article on Food Navigator? Nitrogen content in food materials is necessary to measure when determining the total protein content. This measurement of nitrogen content can be performed using a classical wet chemistry method, but this tends to be a slow and tedious process. The combustion-based Dumas method has gained popularity in recent years as it significantly increases laboratory productivity. Yet when the sample has a low level of nitrogen it can be challenging to analyze. Examples of these hard-to-analyze samples include dry corn starch, NDIN filter bags, nutritional drinks, and beer. How can the combustion method be optimized to accommodate these lower-level nitrogen samples?
Our new 828 series offers key improvements in throughput, uptime, and reliability while achieving fast results for carbon and/or nitrogen and total protein in food, feed, soil, and agricultural samples. By incorporating state-of-the-art hardware and an on-board, touch-screen software platform, the 828 series will allow you to easily handle the most diverse sample applications and significantly increase productivity.