Pretreatment – Excluding bones, all samples submitted for stable isotope analysis must be ready for measurement (pH neutral, clean and dry). Bone samples submitted only for stable isotope analysis include collagen extraction (for non-cremated bones) or carbonate extraction (for cremated bones).
When requesting for a formal quotation/estimate, please indicate the number of samples per material type and the billing details of the paying institution.
Submittal – Please use this online form.
The following are minimum size recommendations for d13C measurements and may not be sufficient in every instance. Please contact us if you are in doubt about the suitability or weight of your sample.
|Material||Minimum sample size required
(for pretreated d13C samples) *
|Bone / Antler / Charred Bone||0.5 mg|
|Insect (Chitin)||2 mg|
|Organic Sediment / Gyttja||10 mg|
|Plants / Seeds||2 mg|
|* Pretreated samples must be pH neutral, clean and dry|
Beta Analytic provides d13C + d15N testing for non-cremated bones using an isotope ratio mass spectrometer (IRMS).
Required sample size: 2 mg before pretreatment
Results: d13C (± 0.3 ‰ relative to VPDB), d15N (± 0.5 ‰ relative to air-N2), %C, %N and C:N values
The lab also accepts these samples on a case-by-case basis:
Materials not accepted at this time:
Please contact us prior to submission to confirm that the lab will accept your sample for d13C + d15N testing.
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Page last updated: September 2022