WM-PEG20M Cross, 30mx0.32mmx0.5µm

The WM-PEG20M Cross GC capillary column 30mx0.32mm, 0.5µm, is a crosslinked version of the polyethylene glycol-20M phase and is only supplied in 30 metre length with thin films. The crosslinking increases resistance to solvent intrusions and allows flushing of the column, which prolongs service life for matrix-loaded samples. No proprietary specification data are published for this designation. WM-PEG20M Cross is used in particular for alcohols, esters, ethers, solvents and flavouring substances.

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.