Low-cost modular chromatography column rack and vial holders.

Gravity-driven chromatography columns are used in scientific, engineering, medical, and industrial fields to separate desired compounds from solutions. Running multiple columns simultaneously saves time and improves procedural consistency. Though column chromatography is widely used, to meet their laboratory needs many investigators must resort to designing and fabricating custom racks for holding their chromatography columns.

Salinity and stable isotope dataset for Guayas estuary waters.

The Guayas estuary is an ecologically and economically vital, large estuarine system located on the western coast of South America. A suite of ∼400 water samples was collected and analyzed to enable investigation of the sources of water types within this estuary, as well as environmental processes active within various portions of it. These samples were obtained at sites distributed across the major areas of the inner and outer portions of the estuary at the ends of consecutive dry (December/January) and rainy (May) seasons.

Surface Water CO variability in the Gulf of Mexico (1996-2017).

Approximately 380,000 underway measurements of sea surface salinity, temperature, and carbon dioxide (CO) in the Gulf of Mexico (GoM) were compiled from the Surface Ocean CO Atlas (SOCAT) to provide a comprehensive observational analysis of spatiotemporal CO dynamics from 1996 to 2017. An empirical orthogonal function (EOF) was used to derive the main drivers of spatial and temporal variability in the dataset. In open and coastal waters, drivers were identified as a biological component linked to riverine water, and temperature seasonality.