Feb 23, 2011 · At each depth, lake water samples will be distributed among 3-125 ml borosilicate glass bottles (PPR), 2-20 ml scintillation vials (pH, DO), 1-30 ml serum vial (DIC), 2-1000 ml amber HDPE bottles (BAC, TDR, CN, NUT, DOC, AN/CAT, CHL, PP, plus extra water to be used for additional experiments, in case of sample spillage, etc.), and 1-500 ml HDPE