HALO Guard Column Holder Back Catalog number: 94900-001 Manufacturer: Advanced Materials Technology Availability: In the manufacturer's stock Price on request - + Recommended 92812-911 HALO 90 Å Biphenyl, 2.7 µm, 2.1 x 250mm Price on request 92713-214 HALO 1000 Å C4, 2.7 µm, 3.0 x 20mm Price on request 95813-602 HALO 90 Å C18, 5 µm, 3.0 x 100mm Price on request