WM-PEG20M-HT, 30mx0.32mmx0.5µm

The WM-PEG20M-HT GC capillary column 30mx0.32mm, 0.5µm, is the thermally stabilised version of the polyethylene glycol-20M phase and is supplied exclusively with a 0.32 mm internal diameter and a 0.5 µm film. The increased temperature resistance enables polar separations that a conventional wax phase at the upper end of the programme can no longer withstand. The determination of the benzene series according to HJ 583 and HJ 584 on the 60-metre variant is documented. WM-PEG20M-HT is used in particular for higher boiling alcohols, glycols, esters, long-chain fatty acid methyl esters and process samples.

Features and Benefits

• High-performance columns with low bleed
• Standard, MS, HT, and specialty phases
• Nonpolar to highly polar
• WCOT and PLOT versions
• Individual performance testing for each column

Additional Information

The WM series is the high-performance line of the gas chromatography product portfolio and covers demanding routine, GC-MS, and specialty applications. The MS variants feature the same phase chemistry as their respective base phases but are manufactured to stricter specifications, with dedicated surface deactivation and a lower desorption rate. In addition to the classic polysiloxane and wax phases, the series includes application-specific columns tailored to a single analytical method. In PLOT columns, adsorption strength and carrier gas velocity determine the separation, and water in the carrier gas shifts the retention.

Legal Information

WM is a product line of Welch Materials, Inc. The product and phase names mentioned are part of the manufacturer's gas chromatography portfolio.