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5 gram potassium inside ampoule with purity 99
Keychains do not light up by themselves
Gold keychain has golden foil with high purity 99
Boron keychain has pieces with purity 99
Rubidium metal (Rb)
Mendeleev keychain 20x40 mm Cu, Te, C crystalmetal 5 gram potassium inside ampouleMendeleev 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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