McKesson Capillary Blood Collection Tube Micro-hematocrit Plain 1.1 X 75 mm 75 µL Blue Stripe Without Closure Glass Tube 75 µL, clear, glass, capillary blood collection tubes without closure Dimensions: 1.1 x 75 millimeters Plain (untreated) tube for use when collecting anti-coagulated blood from a blood collection tube Color-coded blue stripe to differentiate untreated tubes from heparinized tubes Designed for both safe blood collection as well as accurate micro-hematocrit determinations Precision-molded soda lime glass provides excellent sample retention during centrifugation Fill rapidly without affecting specimen integrity RCF rating: 14,500 RPM