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GreenSep SFC Ethyl Pyridine II LC Columns - 100 mm, 4.6 mm I.D., 5 μm

GreenSep Ethyl Pyridine II is based on ethyl pyridine chemistry, providing a unique character for this stationary phase. GreenSep Ethyl Pyridine II is ideally suited for the retention and rapid separation of chemicals containing acid groups without additives. This phase is non-endcapped and provides superior separation of acids in comparison with the GreenSep Ethyl Pyridine. GreenSep Ethyl Pyridine II can easily replace conventional stationary phases used in SFC and deliver excellent performance.

Part Number
Inner Diameter
Particle Size
List Price
Your Price
4.6 mm
3.0 µm
728.00 USD
4.6 mm
5.0 µm
629.00 USD
50 mm
5.0 µm
9800.00 USD
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Many SFC separations have utilized “older normal phase HPLC types” of stationary phases such as unmodified silica, diol, amino and cyano. These phases are poorly adapted to SFC and present a number of limitations for SFC separations including low capacity, poor selectivity and poor peak shape. GreenSep stationary phases, on the other hand, have been specifically engineered for SFC separations, paying close attention to bonding coverage, density and all factors leading to high capacity phases which exhibit excellent selectivity and peak shape. Many of the GreenSep phases designed for basic and acidic compounds do NOT require mobile phase additives that are commonly required with other brands of phases. The GreenSep range features a variety of selectivities offering orthogonality. All of these materials are available in analytical and also semi-preparative (10 mm), and preparative (20 mm, 30 mm and 50 mm i.d.) dimensions. Additionally, comprehensive technical and method development assistance is offered. Shown below is a column selection guide for the development of a SFC separation with the GreenSep Pyridyl Amide being the go-to column of choice, followed by the other columns.

Features and Benefits:

  • Specifically designed for high performance SFC separations resulting in superior separation, selectivity, peak shape, and loading capacity compared to conventional normal-phase HPLC materials adapted for SFC
  • Highly efficient columns with superior reproducibility produced from our rigorous bonding procedures
  • Directly scalable from analytical to preparative on the same media to streamline purification and maximise operational efficiency
  • Many phases have been specifically engineered using functional group chemistry that don’t require mobile phase additives such as triethyl amine


Inner Diameter 4.6 mm
Length 100.0 mm
Particle Size 5.0 µm
Phase Ethyl Pyridine II