2690/2695 Performance Maintenance Kit Back Catalog number: CTS-10988 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11425 Sapphire Plunger Price on request CTS-10324S Seal Pack w/Needle Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request