Check the listing for details. United Carbon Type 5001 Spectroscopic Graphite Electrodes 100 pcs Preformed. Condition: New – Open box. Listed at 40.00 USD. Vintage United Carbon Products Co. preformed spectroscopic electrodes. Type: 5001 Quantity: 100 pieces (as labeled) Graphite/carbon electrodes with rounded tips Used in laboratory and spectroscopic applications Made in Bay City, Michigan, USA Original plastic case with internal padding. Case shows age, discoloration, and tape residue from storage. Electrodes appear intact and visible inside. See photos for condition and details.