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The WM-JN-1 GC capillary column 100mx0.25mm, 1µm, is an application-specific special column with 100 metre length and 1 µm film in a single format. The combination of very long separation path and thick film delivers an exceptionally high plate count while at the same time strong retention of volatile components. Composition, polarity and the meaning of the abbreviation JN are not published. WM-JN-1 is used particularly for complex multi-component mixtures in which hundreds of individual substances are to be differentiated qualitatively and quantitatively.
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.
WM is a product line of Welch Materials, Inc. The product and phase names mentioned are part of the manufacturer's gas chromatography portfolio.
| Brand | WM |
|---|---|
| Product Type | GC Column |
| Length | 100 m |
| Internal Diameter | 0.25 mm |
| Film Thickness [µm] | 1 µm |
| Chemistry Producers Term | JN-1 |
| Country of Origin | People's Republic of China |
| Mode of Separation | Gas Chromatography |