TESTING FOR MICROPLASTICS
Figure 2. Images of types of plastic material found in water samples; Left, shards/fragments. Middle, fibers. Right, sphere-like.
developed by Mason et al. (2018) and involved dye-treating and
filtering either one or two liters of water. The plastic particles
collected on a filter are easily observed as little glowing spots
on a dark background as shown in Figure 1. The visual method
can misidentify particles as microplastics that are actually other
small particles. For additional identification other analytical
methods can be used to identify the type of plastic and eliminate
40 SOURCE spring 2019
Eurofins observed a variety of sizes and shapes of plastic
particles ranging from below 10 microns and up to about 2,000
micron (2 mm) relative to the objects major dimension and in
the form of fibers, shards/fragments, and sphere-like pieces as
shown in Figure 2.
If particles are larger than about 100 microns and have a