Halo 3.4um, 400A, ES-C18 Back Catalog number: 943410-202 Manufacturer: Advanced Materials Technology Availability: In the manufacturer's stock Price on request - + Recommended 91812-204 HALO 90 Å ES-CN, 2 µm, 2.1 x 20mm Price on request 92812-322 HALO 90 Å AQ-C18, 2.7 µm, 2.1 x 30mm Price on request 92813-302 HALO 90 Å C18, 2.7 µm, 3.0 x 30mm Price on request