still used today; this technology couples a GC to an IR, which detects compounds by applying IR. to the gas effluent. Recent improvements in the hyphenated technique, GC/IR, may provide a simple alternative or. supplemental approach to GC/MS for the identification of certain compounds.
Vans' classic shoe style is made out of canvas, and sometimes suedeor leather. The brand makes an effort to create environmentallysustainable footwear, and uses recycled materials wheneverpossible.
The All Star shoe originally came in natural brown colors with black trim. In the 1920s, Converse All Stars were made in all black canvas or leather versions. The All Star was to be the first mass produced basketball shoe in North America. It consisted of a very thick rubber sole, and a ankle covering canvas (or sometimes leather) upper.