LW Scientific 75mm Microhematocrit Tubes/Mylar-clad Glass/NH4 Heparinized 200 vial. The small size and hematocrit of these tubes make them useful for processing whole blood red blood cells plasma or other biological fluids. These tubes come with a Mylar-clad glass finish and are 75mm in diameter. The rubber O-ring closure provides a tight seal and there is a one-way sealing plug that prevents premature tube separation. These tubes are lot tested after each run to ensure accuracy. They are excellent for use in clinical laboratory applications because each tube has two graduations. Large volumes may be ordered filled or unfilled. Specifications for LW Scientific 75mm Microhematocrit Tubes/Mylar-clad Glass/NH4 Heparinized: Manufacturer: LW Scientific Capacity: 75 ml Features of LW Scientific 75mm Microhematocrit Tubes/Mylar-clad Glass/NH4 Heparinized: Microhematocrit tubes 75mm 200 per vial Package Contents: LW Scientific 75mm Microhematocrit Tubes/Mylar-clad Glass/NH4 Heparinized LW Scientific CNT-HTMC-HP77: 75mm Microhematocrit Tubes/Mylar-clad Glass/NH4 Heparinized 200 vial