The Naval Surface Warfare Center Philadelphia intends to procure services to calibrate Zimmer brand voltage sensors to meet ISO 17025 and ANSI Z540 requirements on a sole source basis from Probata Corporation. The proposed contract action is for supplies or services for which the Government intends to solicit and award with only one source under authority of FAR 13.106 (b). Any questions regarding this notice should be emailed to: john.m.ngov.civ@us.navy.mil Phone calls will NOT be accepted.