July 5, today it is turn of gassing you, but not panic it is with oxygen. The oxygen content of the interior ocean informs us, among other things, the time elapsed since the water was in contact with the atmosphere in surface until it was captured in the oceanographic bottles. Yes, all the ocean waters were once on the surface and there were enriched in oxygen. As they circulate through the interior ocean, the oxygen is being lost. The waters at 5000 meters have suffered this process a loooooooot of years ago,  was not even born Lavoisier, who was the first that discovered it. Today we are going to tell you the process to obtain this valuable information.

Take sample! Alba taking and fixing the sample, as it should. Top "milking" the rosette and down by adding a reactive for oxygen trapping. The sample of oxygen is the first to be taken from the rosette because is a gas that is exchanged with the environment very quickly and could damage the samples

There are not maracas!  The samples should be shaken vigorously to produce the desired reaction. But the Max maces are prepared to that and much more. Grips! The reagents are caustic soda, so he wears gloves, but it's cold ...

“San Antón”  performing the analysis of oxygen by the Winkler method. That rare formula in the bottle is "thiosulfate" a poor relative of sulfate.

My yellow water: this is the characteristic color that has the sample at the half of the analysis. Do not think evil is iodine. It loses color as it approaches the end.