Merck, 20267-U, ORBO™ 32 Small Activated Coconut Charcoal (20/40), 100/50 mg

ORBO™ solvent desorption tubes are packed in glass with sealed ends. It is mostly dual-layered and containing one larger bed of adsorbent followed by a smaller back-up bed to capture any sample breakthrough. The beds contain separators typically of glass wool or foam to secure the beds in place.