The Waters® Performance Maintenance Kit for the 2777 Sample Manager contains many of the Waters Quality Parts® necessary to keep your instrument operating at peak performance on an annual basis. The Waters® Performance Maintenance Kit contains the following parts: needle seal (gauge 22) 10/pkg; one lubrication kit, one tension cord MM for inject unit and one tension cord for the needle guide. Additionally, it is important to remember when ordering a PM Kit for the 2777 that a rotor and replacement syringe must be ordered separately from the PM Kit. Make note of the valve type in use and make sure the appropriate rotor is ordered. The most common rotors are for the valves listed here: p/n 700002210 (rotor) for the DC6WK valve and p/n 700002293 (rotor) for the Cheminert C2V valve.