Carbonates on Psi

Hasty Psi Method

Weigh your samples

1. Find clean vials and a tray - in drawer under polly prepline
2. Find the Psi standards - desiccator
3. Ideally you will have one complete set of standards analyzed each day (8 standards in total - ETH1, ETH2, ETH3, ETH4, IAEAC1, IAEAC2, Merck, Coral). Mix them up and randomize their order. This is two sets of standards per tray of 50 vials.
4. Weigh 1200 to 1500 µg of pure carbonate
5. You will also need to run at least two equilibrated gases.

Go Start Psi

1. Check if the previous run has finished or if Psi has crashed
2. Pull lines out of liquid nitrogen dewar and drape off of the floor
3. run reset everything - Analysis > Sequence > Edit > psi_reset_everything.seq, the click Run
4. if Psi Crashed, evacuate and bake traps - Analysis > Sequence > Edit > psi_bake_all_traps.seq, the click Run
5. thaw and dry out liquid nitrogen lines - Analysis > Sequence > Edit > psi_dry_out_liquid_nitrogen_lines.seq, the click Run
6. Create a batch file:
   • Open C:/Nu Stable/Batches/_Clumped_Batch_Template_v23.TXT
   • save as with today's date and descriptive name (yymmdd_YourProject.txt) into the same directory the template was in
   • enter sample and standard information into batch file template and save
   • Some prefer to use a text editor while others prefer to use the Nu Stable software interface to create / edit the batch files
7. run reset everything again - Analysis > Sequence > Edit > psi_reset_everything.seq, the click Run
8. fill out daily log
9. fill up the liquid nitrogen dewar
10. place liquid nitrogen lines into the dewar and wrap the fleece cozy around the lines and top of dewar
11. start - Analysis > Batch > Setup-Full > Open > select your batch file > Run

Do some dishes

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