Premium Oxygen (O) Spectrum Tube, 26cm Subcategory_Electromagnetism Seventy-eight-piece molecular model set with

Seventy-eight-piece molecular model set with 45 atoms and 33 bonds for building basic organic and inorganic structures

and gas control on natural gas for high-temperature chemistry heating applications

Entry-level two-part human skull model separates the skull cap to reveal the cranial cavity for introductory head-anatomy teaching at secondary and college levels

Student kit for constructing a working DC motor from component parts

Premium Oxygen (O) Spectrum Tube, 26cm Subcategory_Electromagnetism Seventy-eight-piece molecular model set withResearch grade oxygen spectrum tube at 26cm with a 10cm central capillary, producing oxygen's characteristic emission lines for spectroscope viewing of atomic emission and quantum energy levels.