Restek 10224 Rtx-5 Column, 30 m, 0.32 mm ID, .25um *NEW* | eBay
For Restek Rtx-5 High Performance Gc-ms Uses A Low Drain Column. 0.32mm, 30m. - Computer Cases & Towers - AliExpress
10223-303 - Rtx-5 Capillary Column 30m, 0.25mm ID, 0.25um w/5m x 0.25mm ID Guard Column Presstight with glue | analytics-shop.com
RESTEK 12620-124 RTX-5 MS Cap Column with 5 m Integra-Guard, Fused Silica, 0.25 µm Pore Size, 0.25 mm ID, 15 m Length : Amazon.ca: Industrial & Scientific