The periodic table banner pen is a convenient way for students to have important resources at their fingertips while working on chemistry calculations - pun intended. This pen has a retractable banner that pulls out from the side of the pen - on the front side of the banner is the periodic table with helpful information such as element symbol, atomic weight, atomic number, and element name, and on the back side of the banner is a list of common chemical constants, conversion factors, and unit prefixes.
The pen has black ink.