It's interested that the ratios are very close, except for Fe (21 times difference) and Cr (2.3 times difference). The rest can be attributed to measurement inaccuracies. However, what I don't understand, is why there is 1291 times (based on Zinc data) difference in absolute values? According ro Miami's data, there must be 103.3x15=1550 ppm Zn in the undiluted solution, whereas Hans Werner reported 1.2 mg/l of Zn. for the same liquid. Or, did he report the resultant increase of concentrations in the tank after adding the recommended dose?I took the recipe posted here by Hans, and the ICP results in the first post, and scaled both of them by the Zn result. (ICP does well at Zn, and the concentration of Zn tested was well in the comfort zone of ICP). It gives a very satisfying result.
The tested values are almost the exact ratios as the concentrations posted by Hans.
Except anything with more than a few ppb of Fe gets almost totally lost on the way to ICP (as @Dan_P @Rick Mathew and I have talked about before). Possible something else co-precipitated with the Fe, but looks like that had minimal effect on the results.
Nice job @Miami Reef I'm confortable with both your results and Hans stated recipe.
I sent Tropic Marin K+ for ATI ICP RO/DI testing
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Randy Holmes-Farley
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math trouble.
Zinc in Miami's test is 103 ug/l = 0.1 ppm. Multiply by 14 and one gets 1.4 ppm in the bottle.
My bad, I considered it was mg/l. Why do you multiply by 14 rather than by 15? I am considering that the amount of 1ml stock becomes 15ml after dilution, and the original values must be 15 times higher?
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Perhaps there is uncertainty in the words Miami used, but the literal reading is he added 1 mL to a 14 mL tube that got topped off with RO/DI. So the dilution is 1 ml into 14 ml total for 14x. If it was 14 ml of RO/DI, then I agree the dilution is 15x.
I added about 1 mL of Tropic Marin K+ and filled the remaining 14 mL tube with RO/DI water.
OK, thanks for the clarification, I was assuming that he took 1ml of TM K+ and topped off with 14ml of RO/DI. I didn't think the test tube volume could be 14 ml 
Well, assuming 14ml, there is now 1.2 times difference with Hans Werner's data. Or 1.29 times if 15 ml. Looks pretty reasonable.
Well, assuming 14ml, there is now 1.2 times difference with Hans Werner's data. Or 1.29 times if 15 ml. Looks pretty reasonable.
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@Randy Holmes-Farley still hasn’t told me what’s in Duke’s Mayonnaise though. That’s all I am trying to get to.
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True. That's still unknown. lol
OP
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Miami Reef
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No. Spread apart within a few weeks.
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You understood me perfectly. The total volume was 14mL, of which a mL of the trace supplement was present.
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Miami Reef
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I will never send you an ICP sample besides my tank or RO/DI water unless I contact you.
I will contact ATI and ask them if I am allowed to do what I did with their service. I’m curious if the same issues apply to their testing.
Randy Holmes-Farley
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Aside from potential inaccuracy of a method that is not set up for the ranges of materials present, one issue arose a while back when some folks sent in standards that had been acidified with (IIRC) nitric acid to prevent precipitation. If the analyst doesn't expect a material with very different safety and chemical properties, it may not be good for the analyst or the equipment involved.
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What are the ingredients in Duke's mayo?
No emulsifying agents other than eggs are allowed, so real mayonnaise does not contain any starches or gums. What are the ingredients found in Duke's Mayonnaise? Soybean oil, eggs, water, distilled and cider vinegar, salt, oleoresin paprika, natural flavors, calcium disodium EDTA added to protect flavor.
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This recipe was from the website and doesn’t represent any results from an ICP sample spike.
I did wonder if the ICP technician would ever run a sample of diluted mayonnaise through there machine?
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I'm surprised no clever reef company lists ingredients as:
What are the ingredients found in all natural XXXX? Water, natural ions. Nothing else, ever!
areefer01
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I would also like to believe this is common curtesy but acknowledge some may not see it as such. I know recently when I sent in a water sample from Fiji I gave ATI a heads up. They replied with their holiday break schedule, sample idle time they are comfortable with, and thanked me.
Luminous74
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I think this check shows we can definitely trust the info from Tropic Marin. Sending in a sample with the A-Elements would just be a waste of money, or at best, a way to double-check the accuracy of an ICP test.
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Should be this:
I sent Tropic Marin K+ for ATI ICP RO/DI testing
I took the recipe posted here by Hans, and the ICP results in the first post, and scaled both of them by the Zn result. (ICP does well at Zn, and the concentration of Zn tested was well in the comfort zone of ICP). It gives a very satisfying result. The tested values are almost the exact...
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