WM-PEG20M, 25mx0.25mmx0.2µm

The WM-PEG20M GC capillary column 25mx0.25mm, 0.2µm, uses a bonded and crosslinked polyethylene glycol phase of type 20M. It is the most widely documented wax phase of the series and is referenced in the pharmacopoeial chapter of the catalogue for numerous determinations. No USP phase group is specified for it, therefore it should be checked in methods with an explicit G-code reference. WM-PEG20M is used particularly for alcohols, glycols, ethers, esters, fatty acids, essential oils and residual solvents.

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.