Narishige G-3: Glass Capillary Tubing (200/pk) - Tritech Research, Inc.
Rongtai Glass Capillary Fiber Manufacturers Large Diameter Quartz Glass Tube China Red Micro Hematocrit Capillary Tube with Heparin - China Glass Capillary Tube, Glass Capillary Without Heparin | Made-in-China.com
Friedrich and Dimmock Glass Capillary Tubing - Friedrich and Dimmock Glass
Precision Capillary Glass Tube – Ultra Accurate and Low Friction