Updates on a few samples and the close down:
9/12/14 11:00 am : full sample present, yet very dirty. Considering how dirty the entire system was, I am unclear if it had been cleaned the previous day by one of my students. Aliquot also taken. Sample was acidified on 9/13.
9/13/14 very small amount – only enough for an aliquot. System cleaned and a blank taken. Blank was acidified that day.
9/14/14 11:15 AM 50 ml of sample – bugs were removed from water and it was acidified that day.
9/18/14 2:00 pm about 100 ml present. Not sure when it may have been collected, since machine had been open for 3 days. Aliquot taken and system powered down. Sample acidified 9/18.