Bell Demonstration Model, All The Components Of Electric Bell Are Mounted On A Large Panel. Allwiring Is Visible And Parts Are Of Large Size. Operates On 4-6 Volts Dc, Mounted On A Large Panel, All Parts Easily Visible, Rigid Constructions
Blue-it Kit, group, lets you grow and engineer bacteria with a DNA program to create an enzyme that will cause a chemical reaction resulting in color-changing molecules. Extract your enzyme from the bacteria and mix into special buffe
Blue-it Kit, individual, lets you grow and engineer bacteria with a DNA program to create an enzyme that will cause a chemical reaction resulting in color-changing molecules. Extract your enzyme from the bacteria and mix into spe