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Density Determination of Medical Sutures by Pycnometry

In this study, we evaluated the density of medical sutures using a Micromeritics pycnometer. The types of sutures, their size, and experimental conditions were investigated to determine their effects on density measurement. Based on the results of two types of suture materials and six suture sizes, the pycnometer is a relatively fast method for density determinations for biomaterials and medical devices with small sizes, such as for sutures. The instrument yields repeatable and precise results; however, the measurement error increases when the sample weight becomes very small.