WM series capillary columns come with a complete range of stationary phases, including polydimethylsiloxane, cross-linked polyethylene glycol (PEG), and PLOTs, among others. Welch Materials offers capillary columns in various specifications and models, providing users with the flexibility to choose according to their preferences. Moreover, Welch Materials can customize columns to meet specific requirements as per user needs. WM series capillary columns are produced through a strict manufacturing process, with each chromatography column undergoing rigorous performance testing. The column performance is comparable to or even superior to some well-known brands.
Welch Materials have concentrated on GC R&D and production for many years, and each column would be tested strictly before selling with attached column report. Welch columns are characterized by stable properties, high column efficiency and good reproducibility.
Welch GC column can be divided into two types:
- WM Series High Performance GC Column
- WEL Series Economical GC Column
Welch also provides services as sample analysis, method development, column recommendation, after-sales support and training for customers. With good product performance and perfect after-sales service system, our GC columns have been widely used in universities, research institutes, pharmaceutical, petrochemical, brewing, environmental protection or other industries.
WM Series High Performance GC Column
WM series of capillary columns adopt strict technique and performance detection with strength in super inertness, low loss, high column efficiency, high selectivity, stable reproducibility and long lifetime.
(1) Super Inertness and Low Loss GC/MS Column
- The unique surface deactivating technique ensures the super high inertness of column, and the peak type of separation component is sharp and symmetrical.
- Bonding and cross-linking technology allow the column to keep a low loss level at higher temperature with good stability and long lifetime.
(2) Exceptional lot-to-lot reproducibility
- The consistency of column inertness and superior inter-column reproducibility can be guaranteed by mixed standards samples test.
- Higher detection sensitivity and more accurate analysis results.
General Specifications:
- Stationary Phase: Polyethylene glycol PEG20M (WAX / WAX MS)
- USP Classification: G16
- Technology: Bonded and cross-linked for low bleed and long lifetime
- Inertness: Special surface deactivation ensures sharp, symmetrical peaks
- Temperature Range: Operates typically from a minimum of 60°C up to a maximum of 250°C
General Applications:
- Alcohols and Polar Solvents: Excellent selectivity and sharp peak symmetry for free alcohols, glycols, and general polar solvents.
- Fatty Acid Analysis: Specialized configurations (such as dedicated fatty acid testing variants) are used to resolve and quantify fatty acid components efficiently.
- Aromatics and Benzene Series: Applied in environmental and industrial testing to monitor aromatic hydrocarbons, including complex benzene series mixtures.
- Essential Oils and Volatiles: Used in the brewing, fragrance, and food industries to isolate and profile volatile constituents and essential oil profiles.
