SHIM-PACK VP-ODS COLUMN,150MMX4.6MM Works With Columns The convenient Shim-pack VP-ODS Three-Column Kit (C18,150 x 4.6 mm) is made from different silica batches for validation of method ruggedness. Columns are supported by a Comprehensive Performance Validation Package to help you meet GLP/GMP needs. This Validation Package includes a Physical Properties Certificate of Compliance,a Chromatographic Performance Certificate of Compliance and a Shim-pack Column Performance Report.