Shim-pack GWS

Shim-pack GWS C18 is an economical choice for routine analysis and is ideal for QA/QC testing.  It is fully endcapped, and suitable for the analysis of acidic and basic compounds.  The high-purity spherical silica results in symmetrical peak shapes and superior lot-lot reproducibility, while its high surface area (450 m2/gram) provides more retention than other C18 phases.