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Biogeochemical Stable Isotope Facility |
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School of Ocean and Earth Science and Technology |
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Popp Lab |
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To contact us: |
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Sample preparation for δ13C, δ15N analysis of solid samples and filters |
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*If your C/N is larger than 25, separate analyses for carbon and nitrogen will most likely be necessary. **If you are studying macroalgae or sediments that contain carbonate material, acidification will be required to measure organic carbon quantity and isotopic composition. With some materials, it has been observed that acidification will cause a nitrogen isotopic offset. ***We are able to grind and weigh samples for you if necessary. We prefer that the samples come to us completely dried, but can help you arrange for this process if absolutely necessary. If you'd like to have us analyze your samples, please fill out the Sample Request Form which you can find on our Home Page.
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Analysis |
Price(UH/non-UH) |
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Prepared Samples*: C & N, only C, or only N |
$12/$18 |
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Prepared Filters (up to 25 mm in diameter) |
$18/$28 |
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Prepared Sediment samples** |
$17/$25 |
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Unprepared samples*** |
varies |
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drying |
$2.50/$3.50 |
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grinding |
$3.50/$5.50 |
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weighing |
$3.50/$5.50 |
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Acidification*** |
$3.50/$5.50 |
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filter prep (drying, sub-sampling, folding) |
$3.50/$5.50 |