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Green LED Demonstration Board Glassware Double vessel copper calorimeter set with Double vessel copper calorimeter set with a 75 by 50mm inner cup on cork supports inside a 100 by 75mm outer shell and a slotted lid this 135 piece biochemistry student set ships in a 4 compartment case for organized building between lessons Used to introduce LED polarity and forward bias behavior this green LED on a demonstration base with 4mm plug connections lights up when current flows in the correct direction
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