1. By means of a chromatographic process

See also: chromatographic

• West Tocharian
• West Virginia
• West Virginian
• west wind
• West Yorkshire
• west-central
• West-sider
• westbound
• wester
• westering
• westerly
• western
• Western Australia
• Western Australia coral pea
• Western ax
• Western axe
• Western balsam poplar
• western big-eared bat
• Western birch
• western black-legged tick
• western blackberry
• western blind snake
• Western box turtle
• western buttercup
• Western Cape