Containing up to 20 different polymers in a single sample, our mixed polymer composition (MPC) samples are valuable tools in advanced microplastic research applications. Whether you're developing new analytical protocols, training laboratory staff, or conducting comparative polymer studies, these samples provide the complexity and reliability your research demands. Our MPC samples maintain the same rigorous quality as our singe-polymer EasyMP™ reference materials, ensuring consistent statistical reliability across all polymer types within each sample