HALO Guard Column Holder Back Catalog number: 94900-001 Manufacturer: Advanced Materials Technology Availability: In the manufacturer's stock Price on request - + Recommended 93411-626 HALO 400 A Diphenyl, 3.4 µm, 1.0 x 100mm Price on request 92122-502 HALO 160 Å ES-C18, 2.7 µm, 2.1 x 75mm Price on request 92113-415 HALO 160 Å PFAS Delay, 2.7 µm, 3.0 x 50mm Price on request