An Westergren ESR, also known as an erythrocyte sedimentation rate (ESR) analyzer, is a medical device used to measure the ESR in a blood sample. The ESR is commonly used as a non-specific medical test to detect levels of inflammation in the body. https://businessinmyarea.com/other/esr-analyzer--advancements-in-automated-erythrocyte-sedimentation-rate-testing