Dual-Inlet O₂ Isotope Analysis

Introduction

make sure previous run is finished
before removing manifold, close all octopus / squid valves and valves 11, 13, 40. but also make sure valves 14, 16, 26, 24 are closed
close manual valve on manifold
remove manifold
attach next manifold (MAKE SURE MANIFOLDS NEVER ARE INVERTED)
open valves 11, 13, and 39 and make sure vacuum reaches X e-3
open manual valve on new manifold after vacuum is low
copy "ColdFingerPressures.csv" (c:\lorax\coldfingerpressures.csv) to server (s:\data\projects\water_17O_irms\coldfingerpressures\)
rename on server so that it has the same prefix name as dual-inlet results file (desktop shortcut to dual-inlet results)
rename the dual-inlet results file to remove the (17O_Water) and then copy to server (s:\data\projects\water_17O_irms\raw\)
close previous run window
enter new sample id info into Identifier1 column
daily log
1. backgrounds for column AD (cup 1) 28.0 mV, in lower left corner of window, select N2_c3_low, then after the instrument changes, read signal from 28.0
2. switch back to O2_high when done
click start in acquisition, then change water name accordingly
click ok