HALO Guard Column Holder Back Catalog number: 94900-001 Manufacturer: Advanced Materials Technology Availability: In the manufacturer's stock Price on request - + Recommended 92812-701 HALO 90 Å HILIC, 2.7 µm, 2.1 x 150mm Price on request 93412-426 HALO 400 Å Diphenyl, 3.4 µm, 2.1 x 50mm Price on request 91812-301 HALO 90 Å HILIC, 2 µm, 2.1 x 30mm Price on request