Today, the question of speed and cost efficiency seems more relevant than ever in light of our need to conserve resources. The DUMATHERM® nitrogen analysis device, produced by C. Gerhardt GmbH & Co. KG, in Königswinter, Germany and operated according to the Dumas method, shows that these challenges need no longer be irreconcilable. Combustion catalysts without chrome constituents, non-toxic absorbents for water and carbon dioxide, as well as chemical-free solutions for the separation of carbon dioxide from the analytical gas stream, demonstrate this fact conclusively. If we are then able to use micro sample weights in place of gram weights on the basis of intelligent analytical technology, we can consequently view the combustion analysis in a new light, as it becomes a real alternative to both secondary methods and the Kjeldahl reference method. This article aims to establish whether gram sample weights are still viable today, or whether intelligent detection technology paired with efficient equipment design render gram weights redundant. Flour and soybean are taken as sample matrices.
Are Macro Sample Weights at Macro Costs Still Viable Today?
Strategies for the Efficient Determination of Protein Content of Homogeneous and Inhomogeneous Samples
- Dumas principle
- nitrogen determination
- protein analysis
- protein characterization
- nitrogen analysis
- protein content measurement
- Kjeldahl analysis
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White papers
Nitrogen / Protein Analysis for Starch
Starch products only contain very low concentrations of proteins. For analysis, the Dumas combustion method has established itself as second reference method more
Are Macro Sample Weights at Macro Costs Still Viable Today?
Cost efficiency and the conservation of resources are very often a contradiction. The protein/nitrogen analysis system DUMATHERM brings both demands together more
Improved automatic steam distillation for determining alcoholic strength in spirits and liqueurs
Excellent alternative for sample cleanup of volatiles from complex matrices. Major advantages are the low costs for consumables per analysis more
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Products
Easily Determine the N Content of Solid and Liquid Samples in Just 3 Minutes Using the Dumas Method
Available with a unique manual sample loader or an autosampler for up to 120 samples DUMATHERM performs according to international standards and regulations more
Finally, Safe and Simple Acid Hydrolysis for Determining the Total Fat of Nearly Any Sample
Classic acid hydrolysis is time-consuming and dangerous, due to the acid. C. Gerhardt developed HYDROTHERM to solve this problem more
Automatic Fibre Extraction for Feed Analysis
Determining the fibre fraction in feed is time-consuming and laborious. C. Gerhardt developed FIBRETHERM to solve this problem more
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Videos
Easily Determine the N Content of Solid and Liquid Samples in Just 3 Minutes Using the Dumas Method
DUMATHERM® technology has established itself as a key component of food and animal feed laboratories. The sturdy, powerful DUMATHERM analytics system provides valid reference results cleanly, quickly and steadily. And it can do so in almost any location with the appropriate gas infrastructu ... more
Automatic Fibre Extraction for Feed Analysis
The usability of animal feed and its impact on animal health depend in large part on the proportions of the different fibre fractions that it contains. In the field of biogas production, the fibre fractions of substrates in fermenters are determined in order to distinguish the carbohydrates ... more
Finally, Safe and Simple Acid Hydrolysis for Determining the Total Fat of Nearly Any Sample
In many sample types, the fat is not freely accessible to the solvent and it cannot be extracted in full. In milk, for example, the majority of the fat is surrounded by membrane and in oil seeds it is surrounded by cell walls. The bonding of fats in starch-lipid complexes or to lipoprotein ... more
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