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Brownlee SPP PhenylHexyl Guard Column - 5 mm x 3.0 mm x Pkg. 3

Alternative selectivity to alkyl bonded phases, recommended for aromatic groups. Compatible with highly aqueous mobile phases to facilitate the retention and separation of polar compounds.

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Brownlee SPP (Superficially Porous Particle) PhenylHexyl guard columns are base-deactivated for good peak shapes when separating basic compounds. They contain a hexyl spacer to provide optimal flexibility for the phenyl ring to facilitate π-π interactions with solutes. These columns are filled with 2.7 μm superficially porous particles that contain a 1.7 μm solid inner core and a 0.5 μm porous silica outer shell, allowing for a shorter diffusion path and nearly double the efficiency compared to traditional fully porous silica particles. These guard columns can be used to enhance the performance of both traditional HPLC systems and UHPLC systems.

  • Quantity: Package of 3
  • Coverage: 3.0 μmol/m²
  • pH Range: 2.0-9.0
  • Pressure Limit (UHPLC): 9,000 psi (620 bar)
  • Temperature Limit: 60℃
  • USP Code: L11


Inner Diameter 3.0 mm
Length 5.0 mm
Particle Size 2.7 µm
Phase Phenyl Hexyl
Pore Size 90.0 Å
Product Brand Name Brownlee SPP
Product Group Guard Columns
Technology Type Liquid Chromatography (LC)