Request A Quote

Molecular Weight Determination Services

Characterization of Polymer Materials for Molecular Weight  


Impact Analytical has extensive capabilities in the area of molecular weight analysis.  Our state-of-the-art polymer analysis laboratory includes several Size Exclusion Chromatographs (SEC’s), with both Refractive Index (RI) and Multi-Angle Laser Light Scattering (MALLS) detectors.  The RI detector provides traditional molecular weight determination through standard polymer calibration, whereas the MALLS detector provides absolute or “true” molecular weight.  We utilize standard solvent systems, as well as non-standard systems (such as hexa-fluoroisopropanol) where needed.  Our detailed reports will provide you with the number average molecular weight (Mn), weight average molecular weight (Mw), z-average molecular weights (Mz) and Polydispersity (Mw/Mn) on both single and multi-component polymer samples. 


Examples of projects involving molecular weight testing include:

  • Absolute Molecular Weight Determination by SEC-MALLS
  • Molecular Weight Distribution Analysis
  • Quality Control Molecular Weight Confirmation (batch to batch studies)
  • Molecular Weight Characterization of "Good" vs "Bad" Samples for Comparison
  • Characterization of Failed Materials for Molecular Weight Degradation
  • Molecular Weight Determination of Polyethylene Bags

Our laboratory can characterize molecular weight of various polymer and plastic materials including:

  • Acrylate acids and esters
  • Long chain acrylic and methacrylate polymers
  • Polyoxamethylene materials
  • Polyethylene glycol
  • Polyimides
  • PLGA material
  • Soluble copolymer materials
  • Bio-oil products
logo PHONE 855-IA SOLVE (427-6583)EMAIL US