MIL-HDBK-1131, DEPARTMENT OF DEFENSE HANDBOOK FOR STORAGE SHELF LIFE AND REFORMING PROCEDURES FOR ALUMINUM ELECTROLYTIC FIXED CAPACITORS (7 JUL 1999)., This handbook provides guidance in determining and prolonging the serviceability of aluminum electrolytic fixed capacitors during storage. This handbook is for guidance only. This handbook cannot be cited as a requirement. If it is, the contractor does not have to comply.