An ESR Rack for blood collection tubes is a specialized laboratory tool designed to hold and organize blood collection tubes used in the Erythrocyte Sedimentation Rate (ESR) test. This rack facilitates the proper positioning of the tubes during the sedimentation process, ensuring accurate and consistent results.ESR racks are essential tools in the laboratory setting, ensuring that blood collection tubes are held securely and oriented correctly during the sedimentation process. By facilitating accurate and organized testing, these racks contribute to effective patient diagnosis and monitoring of various health conditions.