MXT GC Metal Guard Column, Hydroguard 5m, 0.53mm ID

Hydroguard-Treated MXT Guard/Retention Gap Columns/Transfer Lines Material: (passivated stainless steel) • Extend analytical column lifetime by preventing degradation from harsh “steam-cleaning” water injections. • Maximum temperature: 325 °C. *30-meter lengths are banded in 5-meter sections. Diameters greater than 0.10 mm are tested with the Grob test mix to ensure high inertness. When transfer lines from purge-and-trap systems, air monitoring equipment, or other instruments carry condensed water vapor, deactivated column tubing quickly becomes active because of the creation of free silanol groups. These silanol groups adsorb active oxygenated compounds, such as alcohols and diols. Restek chemists have addressed this concern and found a solution—Hydroguard deactivated tubing. A unique deactivation chemistry creates a high-density surface that is not readily attacked by aggressive hydrolysis. The high-density surface coverage of the Hydroguard deactivation layer effectively prevents water vapor from reaching the surface beneath. Use Hydroguard tubing for connecting GCs to these devices: • Headspace analyzers. • Air analysis equipment and concentrator units. • Purge-and-trap systems. ID: 0.53 mm Length: 5 m OD: 0.74 ± 0.025 mm Product Name: Hydroguard MXT Guard Columns & Transfer Lines Product Type: GC Guard Column Units: ea.