US$ 182.00
a less-common metal reference for density-investigation comparisons alongside the standard brass
supporting reflection
Used to verify R = rho*L/A by isolating wire material
Beech wood test tube rack holds 12 tubes up to 20mm diameter in a 9-inch frame for organized storage during chemistry and biology experiments
12-Hole Test Tube Stand for Mixed 30mm and 15mm Tubes, Polyethylene Subcategory_Geology Models a less-common metal reference forFlat pack polythene test tube stand with six 30 mm and six 15 mm holes, disassembling for easy cleaning between uses in chemistry classrooms and student laboratories.
US$ 182.00
US$ 137.00
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