This is a twelve month (12) Base plus Four (4) twelve month option periods Firm Fixed Price (FFP) Contract. The contractor shall provide all personnel, equipment, supplies, transportation, tools, materials, supervision, and non-personal services necessary to perform ISO-accredited calibration services for analytical equipment in the CTD, as defined in this Performance Work Statement (PWS), except for those items specified as Government-Furnished Property (GFP) and Government-Furnished Services (GFS). The objective is to acquire comprehensive, on-site ISO 17025-accredited calibration services for a range of critical laboratory equipment at Dugway Proving Ground (DPG). This includes analytical balances, digital thermometers, flow meters, flow controllers, and analytical weight sets. The contractor shall ensure the continued accuracy and reliability of this equipment to support the Government's ISO 17025 accreditation and maintain the integrity of testing data.