Pre-Calibrated Glass Micro-Hematocrit Capillary Tubes

Our precalibrated borosilicate glass capillary tubes are marked with a black calibration line at 60mm from one end. The calibration line establishes a uniform blood column length. Treated with ammonium heparin, these tubes are designed for both safe blood collection as well as accurate micro-hematocrit determinations. Packaging: 100 tubes per vial, 10 vials per box (1000 tubes per box). ID: 0.55mm +/-0.05mm OD: 1.55mm +/-0.05mm Length: 75mm +/-1mm Volume: 18uL Material: Borosilicate Glass