Real Coal Specimen with Cotton Bag, Large Lump Chemical_Simulated Urine Fully enclosed EDM-80 moving-coil DC

Fully enclosed EDM-80 moving-coil DC milliammeter measuring 0-500mA at plus-or-minus 2

PTFE-sheathed Alnico magnetic stir bar at 1

sized for acceleration

Ocean acidification chemistry kit explores environmental change through pH testing

Real Coal Specimen with Cotton Bag, Large Lump Chemical_Simulated Urine Fully enclosed EDM-80 moving-coil DCOne large lump of coal. Approximately 2. 5"x2"x1. 5" egg or golf ball sized. Please due note that the actual size may very slightly and if you are unhappy with exact size of the coal, you can contact us for a free replacement. Premium cotton muslin bag keeps any created coal dust contained inside the bag Link included on card to an experiment to grow snowflakes on your coal. (Note: There are some additional required ingredients for the experiment that