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Good "Calibration Metal Set" to Start With?

Submitted by mgeselbr on Mon, 09/29/2008 - 14:48

Hi all,
I seem to recall from our discussions in August that it might be nice to have a recommended "Start with this set of 4 metals" calibration set. A combination of 4 metals that is readily available, non-problematic in printing, and that provides some reasonable hot spots to check that the printing and scanning is all working correctly. This would be useful both for new sites that join the project and for new students that begin working with the kit. I just can't recall if we had identified what that "Calibration Metal Set" should be? Any memories that are better than mine? Or suggestions of one that we should all be able to reproduce?

Cheers,
Maggie Geselbracht (Reed College)

‹ Titration of Ink Base Calibration Card ›

Calibration set

Submitted by craymond on Thu, 10/02/2008 - 15:44.

I seem to recall that the plan was to use the Cs-Co-Al-Fe system for calibration. In fact, we are preparing metal solutions this week to begin printing and that was the first one we will do.

Regarding Bruce's comment about running the titration, I know someone that might be able to do that for us in the next week or so. I'll keep people posted.
Casey

Easy reproducible mixture

Submitted by baparkin on Tue, 09/30/2008 - 15:03.

Our Co, Al Fe is a really reproducible composition that we have extensively studied (with a Cu internal standard). There is a whole publication on just optimizing this material (below and in the download section). All the components are simple and soluble but we didn't do this with the Epson ink base. Somebody needs to do a pH titration of the ink base to see if and where it buffers. I have been suggesting this to Wolfe for some time but I don't know if he ever did it. I don't think acid at least to pH 2 or so will hurt the ink jets and is much safer than being too basic and having precipitation problems.

"Combinatorial Discovery and Optimization of a Complex Oxide with Water Photoelectrolysis Activity" Woodhouse, M., Parkinson, B.A. Chem. Mater. 2008, 20, 2495

Maggie -- One good place to

Submitted by rdherric on Tue, 09/30/2008 - 14:06.

Maggie --

One good place to try is the Search Experiments page. You can look for metal combinations that appeared better than the internal standards. I will wait for Bruce to give a more definitive answer than that.