Primary Cell Experiment Kit Chemistry Galvanic Cell Box Holder CaseThe product is shipped based on the color or size of the main image of the product page, if you have special requirements, please leave us a message Primary Cell Experiment Kit Chemistry Galvanic Cell Box Holder CaseSpecification:Shell Material: AcrylicSize (L*W*H): 70x50x60mmApplication: Experiment kit for high school chemistry primary cell experiment Features:1 Connect copper plate and red wire to the red binding post (positive, + )2 Connect zinc plate and black wire to the black binding post (negative, - )3 Connect LED (light emitting diode) to binding posts Long terminal of LED is positive(+), while short terminal is negative (-) 4 Add acid solution into the box 5 Observe LED grows and bubbles up on copper plate Package Included:1 x Primary Cell Box1 x Copper Plate1 x Zinc Plate1 x Iron Plate1 x Light Emitting Diode2 x WiresMore Details: