◎ Ø13×75mm ESR Tube is specially used in blood collection and anticoagulation for Automated Erythrocyte Sedimentation Rate Analyzers sedimentation rate test with the mixing ratio of 1 part sodium citrate to 4parts blood, by Westergren method.

◎ Ø9×120mm ESR Tube is applicable to various Automated Erythrocyte Sedimentation Rate Analyzers.Due to little volume and negative pressure inside the tube, it needs some time for blood collection. Dopatiently wait until blood stops owing into the tube. Then completely mix the anticoagulation and additiveby turning the tube upside down for 6-8 times, Inappropriate mixing will cause hemolysis, coagulation or blood bubble and inuence the test result.