Hydroguard® Water-Resistant Guard/Retention Gap Columns/Transfer Lines (fused silica), Restek


10087 10079 10077 10090 10076 10085 10075 10083 10078 10085-600 10080-600 10079-600 10084 10086 10081 10084-6850 10080 10082 10084-600 10081-600
10849-464EA 554.67 USD
10849-464 10849-370 10849-366 10849-466 10849-364 10849-460 10849-362 RK10083 10849-368 10850-850 RK10080600 10848-868 10849-332 10849-462 RK10081 10850-152 10849-372 10849-330 10849-438 10848-836
Hydroguard® Water-Resistant Guard/Retention Gap Columns/Transfer Lines (fused silica), Restek
Chromatography Columns
These guard columns and transfer lines are designed to prevent water vapor from reaching the surface, preventing aggressive hydrolysis.

  • Extend analytical column lifetime by preventing degradation from harsh “steam-cleaning” water injections
  • Tested with a comprehensive test mix, to ensure high inertness
  • Maximum temperature: 325°C
  • 30- and 60-meter lengths are banded in 5-meter sections

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

With 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

These silanol groups adsorb active oxygenated compounds, such as alcohols and diols.
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