10-Pack Borosilicate Glass Tubing, 20 inch, 0.28 inch OD and 0.19 inch ID Racks & Stands_Microtube Racks 5-inch slots arrayed on a

5-inch slots arrayed on a 20-inch polished hardwood stand accommodate simultaneous gravity filtrations across student workstations in chemistry classrooms

Pairs a 20° apex with two 80° base angles on a glass wedge prism

covering everything from water and CO2 through alkenes

Wide-range triple-scale moving-coil DC voltmeter at 0-3V

across 16 removable parts in an 18-inch female half-size model

10-Pack Borosilicate Glass Tubing, 20 inch, 0.28 inch OD and 0.19 inch ID Racks & Stands_Microtube Racks 5-inch slots arrayed on aPack of 10 borosilicate glass tubing pieces measures 20 inches with 0. 28 inch outer diameter for glassblowing and apparatus construction.