Patrick Martin, Richard Lampitt's graduate student, brought a couple 30L bottles, a CT and a weight to attach to a wire for a do-it-yourself CTD cast down to 1000m. Fortunately, there was some left over water at the ~1000m depth, which Alba Gonzalez-Posada is kindly doing duplicate oxygen titrations on, so I will have a number to help calibrate the two types of oxygen sensors on the gliders -- assuming the deep water masses are fairly similar (Labrador Seawater, presumably). That assumption may or may not bear out, but the temperature-salinity characteristics should answer that question.