US$ 141.25
One-thousand-ohm 0
Demonstrates eddy-current braking as circular magnets swing over a 4
breaking its own circuit to a 12V halogen bulb as heat bends the strip
sized to power electrolysis
100cm Transparent Turbidity Tube with Secchi Disk Included_Outlet One-thousand-ohm 0Measures water clarity in lakes, streams, and ponds using an alternating black and white Secchi disc visible through the clear 100cm tube during turbidity sampling.
US$ 141.25
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