The Periodic Element Guy is Proud to present Hafnium Foil 50mm x 30mm 0.01mm Thick. This foil is from the former soviet union and was to be used in the inner coating of nuclear Fuel Rods. Hafnium is great at absorbing Neutrons. That is why this foil has so little Zirconium ( Less than 0.3%) The Periodic Element Guy was started by an English guy with 2 young children. He wanted to wean them off computer games and teach them more about the elements in a fun and exciting way. He also wanted to make elements available to the masses at an affordable price. These are made with high quality acrylic which encase the element safely inside. Each tile has up to 4 separate vinyl’s, giving all the element info. On the big tiles, the purity. The whole process is done by hand and takes considerable time.