VisionHT? columns, from Grace Davison Discovery Sciences, introduce a new level in ultra-high efficiency HPLC. A powerful combination of ultra-low volume, high pressure hardware and optimized high speed 1.5Ãm media means you'll see separations with a whole new clarity. Complex samples resolve 95% faster with 4x greater sensitivity. 12,000psi pressure limits with exceptional stability. Various dimensions are available, providing even more flexibility over analysis speed and resolution.