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anodized at 70 volts
5 gram potassium inside ampoule with purity 99
Boron keychain has pieces with purity 99
Rubidium metal (Rb)
Keychains do not light up by themselves
Mendeleev keychain 20x40 mm Cu, Te, C crystalmetal anodized at 70 voltsMendeleev keychain has 3 real chemical elements inside with high purity. They are copper, tellurium and carbon. The keychain is made of transparent urethane. The dimensions are 8x20x40 mm. It has a steel chain and a ring.
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