HALO Guard Column Holder Back Catalog number: 94900-001 Manufacturer: Advanced Materials Technology Availability: In the manufacturer's stock Price on request - + Recommended 92813-702 HALO 90 Å C18, 2.7 µm, 3.0 x 150mm Price on request 92714-326 HALO 1000 Å Diphenyl, 2.7 µm, 4.6 x 30mm Price on request 92813-306 HALO 90 Å Phenyl-Hexyl, 2.7 µm, 3.0 x 30mm Price on request