SIL Services & Pricing

Pricelist for Services (updated 7/1/2022)

Sample preparations differ with sample type (solid, liquid, gas) and for each analysis. Proper preparation is critical for quality results. Review the following documents before submitting your samples:

Contact the lab manager Suzanne Ankerstjerne before submitting samples. Find us on Science Exchange.

Sample material not consumed during analysis is archived for 3 months from the date of submission and then discarded. For researchers within the United States, we can return unused sample material if requested. Please make this request during the submission process and include a prepaid return shipping label in your sample shipment. Additional fees may be applied to your bill if the samples are not prepared correctly. We are unable to analyze enriched samples (ie: tracers). If you are in doubt or want to confirm your samples are prepared and packaged correctly, please contact us (

This price list applies to external education/research institutions. If you are a member of Iowa State (internal user), contact Suzanne for the ISU price list. The corporate pricelist is also available upon request.

Sample Analyses Device Mass Spectrometer Cost (USD)
Carbonate (CaCO3) 13C, 18O Gas Bench Delta V $15 per sample
Water 18O, 2H Picarro L1102-i Isotopic Liquid Water Analyzer $15 (1-49 samples),
$14 (50-99 samples),
$12 (>100 samples)
*DICwater 13C Gas Bench Delta XL Plus $15 per sample
(natural abundance, dried,
pulverized, homogeneous)
13C, 15N Elemental
Analyzer (EA)
Delta XL Plus Organic – natural abundance:
$15 per sample (we weigh/encapsulate)
$10 per sample (you weigh/encapsulate)
Soils, Sediments, Filters, and Carbonates:
$16 per sample (we weigh/encapsulate)
$12 per sample (you weigh/encapsulate)
Organics/inorganics 2H, 18O TC/EA Delta XL Plus $ call

* If your samples are poisoned (e.g., HgCl2), an additional charge of $20 will be applied to your bill for waste disposal.

Quality Assurance

1. We use international isotopic standards (NBS 19, NBS 18, VSMOW2, SLAP, IAEA-600, IAEA-CH-6, IAEA N1, IAEA N2, etc.) to place all samples on the appropriate isotope scale (e.g., VSMOW, VPDB). Click here for an assortment of example reports.

2. Click here for the Picarro L1102-i versus GasBench 18O water comparison.