US$ 372.50
Borosilicate crown glass prism with refractive index 1
Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions
distillation
and arterial wall in seven pathology pieces
Single-Pole Double-Throw Knife Switch Material_Aluminum Borosilicate crown glass prism withSingle pole double throw brass knife switch on a durable plastic base, used to route current down one of two alternative branches in series parallel circuit investigations.
US$ 372.50
US$ 249.50
US$ 345.00