Patent ID: 11951417
Assignee: WATERS TECHNOLOGIES CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  G | IPC B  G

Claim 2:
3. A column for protein-based size exclusion chromatography comprising:
porous particles comprising a silicon-based inorganic-organic hybrid material; and
a storage solvent comprising water, from 5 to 15 vol % acetonitrile, from 5 to 100 mM of an alkali metal phosphate salt, and from 50 to 200 mM potassium chloride, wherein the storage solvent is for storing the column for a period of at least two weeks while providing a start p/v ratio greater than 1.3, wherein the column comprises a housing having an inlet and an outlet, and wherein the porous particles and the storage solvent are provided in the housing, the column further comprising a plug or a valve at the inlet and the outlet to hold the storage solvent within the housing.