PEGUYS are proud to offer you a Complete set of Low Pressure Elemental Gasses in a Limited Edition Micro Set with only 152 Pieces available. . Size of the Ampoule is roughly 25mm x 5mm. These can be excited by an electric Transformer or Tesla Coil ( Not included ) where they light up. 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. We.