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Application notes

Choose among a comprehensive library of Application Notes / White Papers and learn more on how to optimize the performance of your VELP instruments. These documents offer typical analyses of well-known samples, together with official references and suggestions, to make you an expert!

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Crude Fiber Determination in Oatmeal

It is always more important to know the ingredients and amount of all the components, for different reasons, including legal and nutritional purposes (labeling).
Learn how to obtain excellent performance with FIWE Series using Scharrer method and how to work in accordance with ISO.

Analytical Instruments

Fiber Analyzers

Crude Fiber Determination in Tea

Analytical Instruments

Fiber Analyzers

CS Determination in coal samples by flash combustion

Find out how to determine Carbon and Sulfur in coal samples.

Analytical Instruments

Elemental analyzers

Determination of Low Sulphur Dioxide content according to modified Monier-Williams method

Find out how to determine sulphur content by automatic steam distillation followed by iodine titration according to the modified Monier-Williams method.

Analytical Instruments

Distillation Units

Determination of Microbial Soil Respiration with Respirometric Sensor System for Soil Analysis

Learn about RESPIROMETRIC Sensor System for Soil Analysis; VELP's laboratory equipment designed to measure the soil respiration in order to:
- determine the soil microbial activity;
- establish the effect of additives (nutrients, pollutants, soil improvers, etc.) on the metabolic performance of microorganisms;
- determine the microbial biomass.

Laboratory Equipment

BOD and Respirometers

Determination of resin content in rubber samples

Soxhlet extraction is a common technique for extracting compounds like oils and resins from rubber using solvents like hexane, toluene, or acetone. This method, detailed in ISO 1407:2012, ensures efficient extraction by continuously cycling the solvent through the sample. In this study, the Soxhlet method is compared with the Randall method used in the VELP SER 158, evaluating efficiency, reproducibility, and accuracy for rubber analysis.

Analytical Instruments

Solvent Extraction

Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium with Respirometric Sensor System

The analysis involves the use of aerobic microorganisms in an aqueous medium containing inorganic salts and the organic material to be tested (the only carbon source) with a concentration of organic carbon between 100 and 2000 mg/l. The mixture is stirred in a closed vessel.

Laboratory Equipment

BOD and Respirometers

Determination of the Ultimate Aerobic Biodegradability of Plastic Materials in Soil with Respirometric Sensor System

Learn how to obtain the optimal rate of plastic material biodegradation in test soil by controlling soil moisture, as well as, determining the ultimate biodegradability of the material itself. A non-specific soil is used as the inoculum because the test simulates the processes of biodegradation that occurs in a natural environment.

Laboratory Equipment

BOD and Respirometers

Determination of Total Fat in Whole Liquid Milk

Hot solvent extraction is a standard procedure for determining total fat in milk, and it is used for both labeling and quality control purposes. Download the application note to explore the efficiency and selectivity of different solvents in extracting fats from milk, following industry reference methods and advanced methodologies.

Analytical Instruments

Solvent Extraction