US$ 251.50
Built around a monochromatic yellow LED light source and simplified optics
opening to 2
5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration
US-milled iron filings at 40-60 mesh in a 250-gram translucent screw-cap bottle
7.9" Polypropylene Stirring Rods with Rounded Ends, 7mm, 12-Pack Racks & Stands_Pipette & Burette Stands Built around a monochromatic yellowTwelve pack of 7. 9 inch polypropylene stirring rods with rounded ends, chemical resistant and heat tolerant for general purpose mixing of classroom laboratory solutions.
US$ 251.50
US$ 1060.50
US$ 2341.50