US$ 20.99
support rod
producing oxygen's characteristic emission lines for spectroscope viewing of atomic-emission and quantum-energy levels
Built for endocrine instruction
25-inch base raises a magnetic needle to a 4
25 inches tall with five 4
Piazi Flower Vertical Section Model Category_Science Gifts support rodPiazi flower vertical section model exposes the vascular bundle, ovary chambers, and reproductive structures for comparative botany teaching.