[x] prepare a dozen trace-metal clean 1.5 ml tubes (same boiling acid SOP as crab isotope tubes; waiting for acid to arrive from Fischer)
[x] ln labeled, trace-metal clean tubes, collect homebrew pure water, water after our RO membranes (but before DI filters), lab tab water, main building DI water and milli-Q water
[x] Labels should include date and water source.
[x] Deliver water samples to Alex Gagnon lab at UW