The roQ kits offer a number of usability features specifically designed to facilitate and improve the largely manual QuEChERS technique. Rigorously tested tubes and superior tube caps ensure leak-free performance. The low-extractable tubes ensure the cleanest possible extracts. In addition, roQ flat-bottom centrifuge tubes are designed to stand upright so they can be easily placed on a scale for sample weighing. The roQ salt packets have a unique, easy-pour design that minimizes spills.