US$ 477.00
endodermis
Combining filtration and titration on one base
or Meker burners
fluid reservoir
5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration
Push/Pull Balance, 250g/2.5N Material_Zinc endodermisTwo hundred fifty gram push pull balance in an acrylic tubular body, calibrated to 2. 5 newtons for measuring small forces during spring law and tension force classroom investigations.
US$ 477.00
US$ 199.00
US$ 2406.50
US$ 49.99
US$ 518.40