Specifications include, but are not limited to: Annual field inspection must include verifying the equipment is operating correctly in reading the turbidimeters and transferring the information to the computer.; Annual Preventative Maintenance Check/Calibration of 2100Q Portable Turbidimeter 13080C027495; Annual PM check must include one start-up or one PM/Calibration on-site per year to include but not limited to bulb or battery pack replacement, etc. Annual PM check must include unlimited technical support calls; Annual PM check must include software and firmware updates, upgrades, service packs, and product releases to keep software operating effectively and efficiently at all times.; Quarterly Inspection of (2) TU5300SC; TURBIDIMETERS, EPA; Quarterly Inspection must include all parts for on-site repairs to include but not limited to O-rings, tubing, vials, etc.; Quarterly Inspection must include on-site calibrations, factory recommended maintenance (to include but not limited to O-rings, tubing, vials, etc.)