Electrode for Electrolyzer, 2 x 40mm Subcategory_Test Tubes Sturdy wooden pulley simple-machine model

Sturdy wooden pulley simple-machine model with multiple pulleys mounted in series and parallel

Long-focal double-convex glass lens at 75mm diameter and 500mm focal length

Hardwood 25-slot slide storage box safely holds standard microscope slides for small-collection organization and lab bench storage

setting UV sanitization cycle duration and restoring full cabinet function when the original switch fails under classroom use

supplied in a storage case for student precision work

Electrode for Electrolyzer, 2 x 40mm Subcategory_Test Tubes Sturdy wooden pulley simple-machine modelIron anode and cathode pair fitted into a rubber bung for the student electrolyzer, used to compare reactive metal electrolysis behavior against carbon and platinum in the same apparatus.