Professional-grade micro volume blood collection tubes pre-filled with EDTA K3 (tripotassium ethylenediaminetetraacetate) for high-precision hematological analysis. Unlike K2, the K3 additive is applied in liquid form, ensuring rapid and complete mixing with small blood volumes, which is crucial for pediatric and neonatal diagnostics. It effectively prevents clotting by chelating calcium ions, perfectly preserving the morphology of blood cells for Complete Blood Count (CBC) and automated hematology testing. Made from medical-grade polypropylene, these tubes feature a secure, leak-proof cap and clear graduation to ensure sample integrity and precise volume measurement.