The Brownlee Spheri® C18 ODS column contains a small-pore, silica-based sorbent for separating small molecules. The C18 is the most retentive reverse-phase in this family, and the polyfunctional (ODS) bonding is ideal for different analyte selectivities. This conventional Brownlee column (non-cartridge) uses standard compression end fittings compatible with all HPLC instrumentation and only requires a holder when used with a NewGuard cartridge. To couple a conventional column to a NewGuard cartridge, a NewGuard holder (07150001) is necessary. End-Capping: Yes Carbon Load: 14% Interaction Mode: Reversed Phase pH Range: 2.5-8.0 Temperature Limit: 60℃ USP Code: L1