Premium Carbon Dioxide (CO₂) Spectrum Tube, 26cm Pack Size_10 ten 4 by 3-inch plane

ten 4 by 3-inch plane glass mirrors at ~2

Length-adjustable wooden pendulum simple-machine model with a blue bob sliding along the string and a wooden guide keeping the swing on a consistent path for period-vs-length measurements

Borosilicate glass force-pump model with transparent walls revealing the valve-and-piston action

Pack of 10 natural bark cork stoppers in Size 13 measures 24mm in length for sealing laboratory vessels and chemistry apparatus

Six-piece retort stand set combining a powder-coated 10 by 6 inch steel base

Premium Carbon Dioxide (CO₂) Spectrum Tube, 26cm Pack Size_10 ten 4 by 3-inch planeGlass spectrum tube at 26cm filled with research grade carbon dioxide, displaying CO2's molecular band emission spectrum for spectrometer study of triatomic molecular structure.