DS2500 Solid Analyzer can obtain the precise results of vinyl content in silicone rubber in less than a minute without sample preparation or any chemical reagents. In contrast to the primary method, NIR spectroscopy is a cost-efficient and fast analytical solution for the determination of vinyl content in silicone rubber.

Silicone samples were measured with a DS2500 Solid Analyzer in transflection mode over the full wavelength range (400–2500 nm). A DS2500 Slurry Cup was employed, which simplifies the positioning  of the sample and cleaning of the sample vessel. The 1 mm gold diffuse reflector defines the same path length for all measurements to guarantee reproducible results. As displayed in Figure 1 samples were measured without any preparation step. The Metrohm software package Vision Air Complete was used for all data acquisition and prediction model development.

Quality Control of Silicone rubber using Metrohm NIRS DS2500 solid analyzer, Near-infrared spectroscopy provides a cost-efficient and fast solution for the determination of vinyl content in silicone rubber.