Glassware calibration services are available for glassware < 6.0L with volume gravimetrically determined at 20°C. This service is used primarily by outside groups for volumetric calibration of dissolved oxygen sample flasks and volumetric flasks for nutrient standards. All ODF dissolved oxygen sample flasks and volumetric flasks used for making nutrient standards are calibrated. 

Methods and equations follow SOP13 from Dickson, et al (2007)

Dickson, A.G., Sabine, C.L., and Christian, J.R., "Guide to best practices for ocean CO2 measurements," PICES Special Publication 3, 191 pp. (2007)