Widely applied in chemical workflows, HPLC Guard Columns (Analytical) Nucleoshell ® Biphenyl play a crucial role in protecting the main HPLC column from contamination. With a length of 4mm and an inner diameter of 2mm, they are designed to be placed within a guard column holder, which is installed between the injector and the HPLC column. This setup prevents harmful chemical impurities from reaching the main column, thereby extending its lifespan. Featuring a pore size of 90 Å, a particle size of 2.7 µm, and a carbon content of 5.2%, these guard columns are endcapped, pressure stable up to 600 bar, and compatible with acetonitrile-water eluents. Their biphenylpropyl modified surface ensures optimal separation performance through reversed-phase principles,

• Category: Pre-column systems for HPLC
• Particle type: Core-shell, superficially porous particles (SPP)
• Separation principle: Reversed phase (RP)
• Eluent in column: Acetonitrile - Water
• Particle size: 2.7 µm
• Carbon content: 5.2 %
• L x Ø internal (column): 4 x 2 mm
• Column inner diameter: 2 mm
• Endcapped: yes
• Pressure stability: 600 bar
• Surface chemistry: Biphenylpropyl modification
• pH stability: 1,5-8,5
• Column length: 4 mm
• Pore size: 90 Å
• Specific surface according to BET: 130 m²/g