Disposable Vacuum Blood Collection ESR Tube,

Disposable Vacuum Blood Collection ESR Tube, made of glass material only. The tube inner wall is coated with sodium citrate anticoagulant at standard ratio 4:1, specially for erythrocyte sedimentation rate testing. Adopt high chemical inertness glass, stable performance without impurity precipitation, good for long-time sample storage and long-distance transport. Pre-set fixed vacuum volume, marked with clear scale lines for accurate blood collection. Equipped with leak-proof black threaded cap, EO sterilized, single use only. Widely used in clinical laboratories for ESR examination.