WM-FFAP, 30mx0.53mmx0.5µm

The WM-FFAP GC capillary column 30mx0.53mm, 0.5µm, uses a nitroterephthalic acid-modified polyethylene glycol phase of USP phase group G35 and is highly polar. The free acid groups of the modification act selectively on protonatable analytes, so free fatty acids and phenols elute with symmetrical peaks instead of tailing as on untreated wax phases. In polarity it is comparable with DB-FFAP, HP-FFAP, CP-FFAP, PE-FFAP, BP-21, Nukol and Stabilwax-DA. WM-FFAP is used particularly for volatile fatty acids, phenols, organic acids, aldehydes and acrylate esters.

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.