TDU Tubes, SafeLok SS, Tenax TA/Carbograph 1TD/Carboxen 1003

Feature patented diffusion-locking technology at either end of the sorbent bed to prevent diffusive ingress of atmospheric contaminants outside the pumped sampling period Significantly reduce the risk of contamination from poorly fitted or loose caps Prevent necking and other damage to the ends of tubes caused by over tightening of the tube seals Stop the ingress of volatiles from the laboratory air during routine capping and uncapping procedures Facilitate pumped sampling over extended periods at low (<1 mL/min) flow rates allowing the collection of time weighted average concentration data over periods of weeks or months without exceeding safe sampling volumes Individually etched with unique serial number for convenient sample identification Robust barcode—the most reliable "code 128" format—on tube for recording and tracking Available unconditioned or preconditioned and ready to sample. Tubes are reusable after thermal desorption for most applications Tenax is a trademark of Buchem BV. Carboxen is a trademark of Sigma-Aldrich.