Our precalibrated 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