Standard High-Quality Spectrometer Metal Labware_Lab Jacks & Stands 5 by 4-inch ventilation apparatus

5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration

Thirty-atom organic chemistry model set with 24 short and long bonds

this universal clamp holder accepts rods up to 20 mm in diameter and bolts securely to retort stands for oversized load support

Aluminum 40cm precision force table with tapped pulley positions and central ring assembly for resolving and composing force vectors under equilibrium conditions

Standard High-Quality Spectrometer Metal Labware_Lab Jacks & Stands 5 by 4-inch ventilation apparatusMounted on a precision base, the standard spectrometer integrates collimator, telescope, and prism table for measuring wavelengths and the refractive indices of solids and liquids.