ExactMP™ microplastic reference materials consist of precisely defined microplastic spikes embedded in a transparent, water-dissolvable pullulan film.
The transparent film allows the fibers to be imaged and verified while immobilized within the matrix. The solidified matrix keeps the fibers securely in place during handling and shipping. When exposed to water, the film rapidly dissolves, releasing only the microplastic spike fibers for clean and controlled additions during method development, validation, and quality control.
 
Production
ExactMP™ samples are produced by dispersing microplastic fibers in a pullulan solution prepared with ultrapure water. The suspension is then formed into small circular films (Ø = 4–7 mm) with a thickness of approximately 50-100 µm. During drying, the pullulan matrix solidifies and immobilizes the fibers within the transparent film.
 
Fiber length ranges
Standard size ranges: 50–500 µm, 50-1000 µm, 50-1500 µm, & 500-1500 µm.
Custom size ranges available upon request.
 
Particle concentration
Each indiviudal ExactMP™ sample holds a precise number of particles. Particle concentration increases with decreasing fiber length. Expect particle concentrations in the range of:
• 50-500 µm: n = 70-140
• 50-1000 µm: n = 50-100
• 50-1500 µm: n = 30-60
 
Certificate of Analysis (COA)
All samples are accompanied by a sample-specific certificate of analysis (COA) for each individual sample. The COA includes:
• Polymer composition
• Fiber length distribution within size groups
• Number of fibers per individual sample.
• Processed and raw data, including micrographs from which the data was derived
 
COAs are accessible via a weblink or QR code printed on each sample label.
 
Download Certificate of Analysis (COA) examples:
• ExactMP™: Fibers (50-1500 µm), PET, Angular (Trilobal), Red.
 
Source of origin
Microplastic fibers are obtained from the mechanical processing of textile products and may contain additives or treatments present in synthetic fabrics. The use of real-world textile materials improves the environmental relevance of the reference material.
 
Shipping
Depending on availability, orders are typically prepared within 1–3 weeks of order confirmation.
Once shipped, parcels are delivered worldwide via DHL Express, usually within 1–3 business days depending on the destination.
Shipping costs are automatically calculated at checkout on the basis of location.
 
Contact
Need a quote or have specific requirements?
Contact us to discuss tailored size ranges, concentrations, or additional customization options.