Shim-pack Scepter columns consist of an organic silica hybrid particle for excellent stability and performance under a wide range of LC conditions. Similar to Acquity and XBridge BEH C18, and Kinetix Gemini C18. USP L1, pH range: 1-12, Max pressure: 70 MPa/400 bar/10,000 psi. 120A pore size, 20% carbon load, fully endcapped. Compatible with 100% aqueous conditions.