WM-624, 30mx0.32mmx1.8µm, II

The WM-624 GC capillary column 30mx0.32mm, 1.8µm, uses a medium-polar phase of 6% cyanopropylphenyl and 94% dimethylpolysiloxane of USP phase group G43. The low cyanopropyl content increases the retention of polar and halogenated volatile compounds compared with a pure methyl phase, without losing the solvent-favourable peak shape. The phase is expressly tailored to EPA methods and in polarity is comparable with DB-624, HP-624, CP-624, AT-624, Rtx-502.2 and VOCOL. WM-624 is used particularly for volatile organic compounds, residual solvents in pharmaceuticals and chlorinated 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.