Produced for stability across temperature-sensitive applications, the Hplc Guard Columns (Analytical) Nucleodur ® C 18 Pyramid, 5 μm, 4 x 5 mm, serve as essential pre-column systems within high-performance liquid chromatography (HPLC). These guard columns, featuring fully porous particles (FPP), protect the primary HPLC column from potential contaminants, extending its lifespan. With a pore size of 110 Å, a pore volume of 0.9 ml/g, and a specific surface area of 340 m²/g, these guard columns offer optimal separation efficiency while maintaining pressure stability up to 600 bar. Suitable for a wide range of pH levels (1.0-9.0), they are ideal for reversed-phase separations using acetonitrile-

• Category: Pre-column systems for HPLC
• Pore volume: 0.9 ml/g
• Particle type: Fully porous particles (FPP)
• pH stability: 1,0-9,0
• Specific surface according to BET: 340 m²/g
• Particle size: 5 µm
• Surface chemistry: Octadecyl (C 18 , ODS) modification, Polar endcapping
• Column length: 4 mm
• Separation principle: Reversed phase (RP)
• Carbon content: 14 %
• Endcapped: yes
• Pressure stability: 600 bar
• L x Ø internal (column): 4 x 5 mm
• Application Database (Macherey-Nagel): HPLC
• Column inner diameter: 5 mm
• Eluent in column: Acetonitrile - Water
• Pore size: 110 Å