These microhematocrit tubes feature capillary action to draw samples quickly. Tubes are available with heparin for finger-stick samples or untreated for anticoagulated venous samples. The 40mm plastic tubes are made for use with the MP multipurpose centrifuge (see 00- series) and the CritSpin* microhematocrit centrifuge (see 00-0 series). The 5mm tubes are made for use in conventional centrifuges that support the full length of the tube. SafeCrit* hematocrit tubes are made of nonbreakable 00% plastic to eliminate the potential safety hazards of broken glass.
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