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EMA 502 Elemental Analyzer CHNS-O

https://www.velp.com/en-ww/ema-502-elemental-analyzer-chns-o.aspx Analytical Instruments > Elemental analyzers > Elemental Analyzer CHNS-O > EMA 502 Elemental Analyzer CHNS-O EMA 502 Elemental Analyzer CHNS-O Precise, versatile, cloud-enabled micro elemental analyzer for Carbon, Hydrogen, Nitrogen, Sulfur and Oxygen determination with Helium and Argon as carrier gas. EMA 502 CHNS-O Elemental Analyzer F30800100 The all-in-one CHNS/O [...]

KS 1000 Scrubber

https://www.velp.com/en-ww/ks-1000-scrubber.aspxKS 1000 Scrubber F307A0660 Maximum safety for your laboratory The KS 1000 Scrubber is engineered to safeguard the laboratory environment and the health of the operators by eliminating exposure to harmful acid fumes produced during the Kjeldahl digestion or other processes.... This step allows for trapping even part of the sulfur dioxide produced during digestion.

Digestion and Distillation: A Comprehensive Guide to Applications Beyond Kjeldahl

https://www.velp.com/en-ww/digestion-and-distillation-a-comprehensive-guide-to-applications-beyond-kjeldahl.aspxThis procedure involves a three-step: Kjeldahl Digestion : the sample is heated at high temperature after mixing with catalysts and concentrated sulfuric acid; Kjeldahl Distillation : the digested sample is treated with a base to shift the equilibrium and obtain free ammonia (NH3); this ammonia is then removed by steam distillation and collected in a proper [...]

Protein Analysis in Food: How to Determine Protein Content Accurately

https://www.velp.com/en-ww/protein-analysis-in-food-how-to-determine-protein-content-accurately.aspxProteins are important macromolecules composed of carbon, hydrogen, oxygen, nitrogen, and sulfur , playing a fundamental role in nutrition, metabolism, and food quality. ... This is because food contains not only protein-bound nitrogen but also non-protein nitrogen (NPN) from compounds like free amino acids, small peptides, nucleic acids, [...]

Detergent fiber analysis

https://www.velp.com/en-ww/detergent-fiber-analysis.aspxDIGESTION : the sample is boiled in the Neutral Detergent Solution NDS with a heat-stable a-amylase-treated enzyme to separate the neutral detergent soluble fraction (sugars, starches and pectins soluble, filtered) from the neutral detergent-insoluble fraction (cell walls substances, hemicellulose, cellulose and lignin, residues) WASHING : the residues inside crucibles are washed with water [...]

CS DETERMINATION IN COAL SAMPLES BY FLASH COMBUSTION

https://www.velp.com/en-ww/cs-determination-in-coal-samples-by-flash-combustion.aspxThe level of sulfur concentration in coal influences the dispersion of pollutants , such as sulfur dioxide, sulphuric acid during combustion. The lower the sulfur content , the better the quality of coal, which continues to be the world's leading energy source , despite growing concerns about environmental pollution and [...]

Crude fiber analysis

https://www.velp.com/en-ww/crude-fiber-analysis.aspxIt is the reference for the legal measure of fiber grains, meals, flours, and feeds, even if it accounts for most of the cellulose but only a portion of the lignin and no ash, so it underestimates true fiber and is less than acid detergent fiber (ADF). ... The Crude Fiber determination can be summed up in 5 steps: ACID DIGESTION (BOILING & [...]

The Digestion Phase

https://www.velp.com/en-ww/kjeldahl-digestion.aspxAdd the sample, acid and catalyst in the test tube Place the sample into the most suitable VELP glass test tube along with 12 - 20 ml of concentrated sulfuric acid , as specified in the method. The total amount of acid needed during Kjeldahl digestion can vary from one sample type to another. Another factor to consider is [...]

CONSISTENCY AND ACCURACY FOR FIBER DETERMINATION FOLLOWING OFFICIAL METHODS

https://www.velp.com/en-ww/consistency-and-accuracy-for-fiber-determination-following-official-methods.aspxWEENDE METHOD (CRUDE FIBER) The method is based on the solubilization (digestion) of non-cellulosic compounds by sulfuric acid and potassium hydroxide solutions. ... It is the reference for the legal measure of fiber grains, meals, flours, and feeds, even if it accounts for most of the cellulose but only a portion of the lignin and no ash, so it [...]

Distillation and Titration

https://www.velp.com/en-ww/kjeldahl-distillation.aspxThe ammonia gas is led into an acid trapping solution where it dissolves and becomes a trapped ammonium ion once again. ... Put a standardized solution (titrant) of hydrochloric acid (HCl) or sulfuric acid (H2SO4) in the burette; this solution will be added (automatically) to the colored boric acid [...]