PM Kit, 1290 Binary Pump Back Catalog number: CTS-21421 Availability: In the manufacturer's stock Price on request - + Recommended 11-2591 Needle Guide Price on request CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request CTS-10788-5 Needle Wash Frit, 5/pk Price on request