Real Coal Specimen with Cotton Bag, Large Lump Chemical_Simulated Urine Ocean acidification chemistry kit explores

Ocean acidification chemistry kit explores environmental change through pH testing

corrosion resistant for repeated conductivity and resistance experiments

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

while variable focus produces five parallel beams that a shutter masks selectively

and engineering application investigations

Real Coal Specimen with Cotton Bag, Large Lump Chemical_Simulated Urine Ocean acidification chemistry kit exploresOne 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