ORBO™ sorbent tubes contain two beds of the same selective adsorbent seperated by glass wool or foam, for gas and vapor sampling.

• Wide range of high quality adsorbents
• Consistent adsorbent mesh sizes
• Coated and specially-treated materials
• Reproducible recoveries and low standard deviation
• Consistent bed weights from tube to tube to ensure capacity

The dual-layer or two-bed construction of the tube allows for any sample breakthough to be captured in the smaller back-up bed.