US$ 82.99
sized to detect bidirectional currents stronger than the milliampere-class meters can read
and sustainable energy principles
Low-conductivity lead rods at 300 by 3mm in a ten-pack
Mid-size 115 by 65 by 18mm acrylic rectangular refraction block
proof plane
Negative Coefficient of Solubility Chemistry Demonstration Material_Silica sized to detect bidirectional currentsUsed to demonstrate that some compounds become less soluble as temperature rises, 500mL of saturated calcium acetate precipitates on heating and re dissolves on cooling reverse of typical rules.
US$ 82.99
US$ 55.00
US$ 44.99
US$ 80.00
US$ 64.99
US$ 29.99
US$ 37.99