Medical Device Testing Services
Medical Device Testing Services
 

Testing Know How

Testing Tip: July 20, 2016 

Acute Particulate Characterization Testing Tip:

How much information are you getting from your particles? Standard laser-based particle counters are capable of providing a particle count and separating counted particles into bin sizes (Ex: 10-25µm, 25-50µm, etc.). This can provide important, basic information about particles shed during tracking and deployment, but another method is capable of unlocking more information, including detailed particle morphology, particle composition, individual particle imaging, and FTIR analysis. The key to this method is particle capture and retention – gold-coated filters are used to capture and retain shed particles. The filters are immediately transferred to an SEM/EDX for analysis, which provides detailed particle-specific morphology data, particle-specific composition data, and individual particle imaging. The filters are stored in-house, allowing additional analysis to be performed as needed (FTIR, optical microscopy, etc.). Capturing and retaining particles makes it possible to analyze and view shed particles using various instruments and techniques, which leads to a much more detailed and informative root cause analysis.