Recent studies by the University of Oldenburg show that the sea salt "Fleur de Sel" also contains microplastics. Researchers found that the salt contains up to 1800 micrograms per kilogram. The small particles are between one micrometer and five millimeters in size and can only be detected by using sensitive methods. WESSLING, as an independent testing laboratory, possesses the necessary expertise and equipment to conduct these tests. Microplastics experts analyse the sea salt for microplastics by using, for example, state-of-the-art spectroscopic analysis techniques. These experts also provide advice to salt factories, distributors and the trade with a wealth of experience on the subject.
Unlike ordinary sea salt, which is extracted from the bottom of a salt basin, "Fleur de Sel" forms a thin layer of salt on the surface of the water. In their research, the scientists from Oldenburg mainly identified polyethylene (PE), polypropylene (PP) and polyethylene terephthalate (PET). All three are main components in packaging waste.
WESSLING is currently working on several projects on the subject of microplastics in the environment: In the research project "MikroPlastiCarrier" wastewater is tested for microplastics and the absorption of pollutants on the particle surface is being analysed. In the research project Tyre Abrasion in the Environment (RAU), WESSLING, together with other partners, is determining the entry of the microparticles produced by tyre abrasion into the environment. In addition, the experts for the new plastic-free seal FLUSTIX test consumer products for plastics and thus provide the criteria for awarding this seal.