DescriptionSodium heparin tube is used in blood collection for the test of clinical plasma, biochemistry and blood rheology, etc. Easy to view the liquid with the transparent body design. The test tubes with a tight fitting cap, no rough edges, they are water and air tight, have a good seal.Features- Color: Green and transparent. - Material: Glass. - Size: 7.50X1.30X1.30cm/2.95X0.51X0.51 inch. - Capacity: 3ml. - Made with premium glass material, environmentally friendly, strong and durable to use. - Smooth surface for easy to clean and ensure the accurate experiments. - Samples collected in these tubes are used for plasma determinations in chemistry. - Suitable for children or small animals to collect blood. Anticoagulant is heparin anticoagulant. - The package contains 100pcs test tubes with lids , which can meet your diverse needs in daily life.