Cobalt (Co) 24.26mm Metal Disc 99.95% Pure for Collection or Experiments industrial the special wedge design helps

the special wedge design helps to seal better

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Sealing lip for minimizing contaminants

Cobalt (Co) 24.26mm Metal Disc 99.95% Pure for Collection or Experiments industrial the special wedge design helpsCobalt (Co) 24. 26mm Metal Disc 99. 95% Pure for Collection or Experiments Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver gray metal. Wikipedia Quarter not included Product Features One Disc, measures 24. 26