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Rubber, Plastic & Polymers

The rubber, plastic, and polymer industries require accurate chemical and physical characterization to ensure material quality, performance, and compliance with regulatory standards. Understanding elemental composition, nitrogen content, oil presence, and biodegradability is useful for manufacturing and product development. 

Velp provides analytical instruments designed for the comprehensive testing of polymers, rubber compounds, and plastic materials. Our solutions address the needs of R&D labs, quality control teams, and production facilities handling a variety of sample types.

We support public and private entities in:

  • Elemental analysis for CHNS and oxygen determinations in polymers, bioplastics, and rubber materials.
  • Kjeldahl and Dumas nitrogen determination in polymers, tyres, and additives.
  • Solvent extraction for oil and resin determinations in recycled PET and rubber samples.
  • Biodegradability studies of plastics in soil and aqueous samples.
  • Sample preparation for solid and semi-solid samples.

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!
CHN/O Determination in Bioplastic
Discover how VELP and the EMA 502 CHNS-O Elemental Analyzers support laboratories in obtaining accurate and reproducible results in the determination of Carbon, Hydrogen, Nitrogen, and Oxygen in PHA resin and blown film.
Analytical Instruments
Elemental analyzers
CHNS/O Determination in rubber samples – material characterization
Find out how to determine Carbon, Hydrogen, Nitrogen, Sulfur and Oxygen in viton samples for material characterization.
Analytical Instruments
Elemental analyzers
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
EMA 502 - CHNS/O Determination in Metal Organic Frameworks by Flash Combustion
Metal-Organic Frameworks (MOFs) are unique crystalline structures with great potential. With their use, it is possible to design systems with very specific properties. For this reason, they attract the interest of many scientists moving towards their optimization for industrial applications. Learn about CHNS/O determination with the EMA 502
Analytical Instruments
Elemental analyzers
Nitrogen Determination in Cellulose Nitrate - Dumas/Combustion method
The determination of nitrogen content in cellulose nitrate is important to distinguish high nitrogen content substances, which are used as explosive, from the ones containing a medium or low amount of nitrogen, ideal for the preparation of jellies explosive and smokeless powders. Learn how to obtain excellent performance with NDA Series and how to work in accordance with STANAG.
Analytical Instruments
Elemental analyzers
Nitrogen Determination in Tyre Rubber - Dumas/Combustion method
For tyre manufacturers, it is important to know the nitrogen content present in the constituent mixture, since a high amount of nitrogen adversely affects the performance of the tyre, increasing the incidence of premature failure. Learn how to obtain excellent performance with NDA Series and how to work in accordance with ISO.
Analytical Instruments
Elemental analyzers
SER 158 - Oil Determination in Recycled PET
Solvent extraction is one of the analytical methods commonly used to determine various compounds present on a known substrate matrix specifically; the present application has been studied to determine glue and organic substances in weight from rPET flakes.
Analytical Instruments
Solvent Extraction