HALO Guard Column Holder Back Catalog number: 94900-001 Manufacturer: Advanced Materials Technology Availability: In the manufacturer's stock Price on request - + Recommended 92714-926 HALO 1000 Å Diphenyl, 2.7 µm, 4.6 x 250mm Price on request 92112-717 HALO 160A PCS C18, 2.7um 2.1mm x 150mm Price on request 92813-711 HALO 90 Å Biphenyl, 2.7 µm, 3.0 x 150mm Price on request