100-Pack Non-Heparinized Microhematocrit Capillary Tubes, 100mm, Borosilicate 3.3 Glass Material_Brass accepting rods up to three-quarters

accepting rods up to three-quarters of an inch for positioning apparatus at any angle

portable enough for mobile demonstrations of current-driven magnetic field strength

4 GHz bidirectional RF clicker pairs students and educators with a private help-request feature for discreet in-class support

Pack of 6 borosilicate 3

sized for physics force experiments and balance calibration in classroom laboratory sessions

100-Pack Non-Heparinized Microhematocrit Capillary Tubes, 100mm, Borosilicate 3.3 Glass Material_Brass accepting rods up to three-quartersPack of 100 microhematocrit capillary tubes measures 100mm with 1. 3mm inner diameter for blood sample collection and laboratory analysis procedures.