STANDARD CALIBRATION SERVICES FOR STABLE ISOTOPE LABORATORIES
| Description | Method | Sample | Time | |
| Size | ||||
| (days) | ||||
| Hydrogen (D/H) Isotope Analyses | ||||
| 2H of water – 3 days x 5 reps. | equilibration | 20 mL | 21 | |
| 2H & 18O of water – 3 days x 5 reps. | equilibration | 20 mL | 21 | |
| Carbon Isotope Analyses | ||||
| 13C of solid or liquid – 3 days x 5 reps. | EA-IRMS | 1 g | 21 | |
| 13C & 15N of solid or liquid – 3 days x 5 reps. | EA-IRMS | 1 g | 21 | |
| 13C & 18O of pure carbon dioxide – 3 days x 5 reps. | CF-IRMS | Enquire | 21 | |
| 13C & 18O of 10+% carbon dioxide – 3 days x 5 reps. | CF-IRMS | Enquire | 21 | |
| 13C & 18O of 1 – 10% carbon dioxide – 3 days x 5 reps. | CF-IRMS | Enquire | 21 | |
| 13C & 18O of carbonate – 3 days x 5 reps. | CF-IRMS | 1 g | 21 | |
| Nitrogen Isotope Analyses | ||||
| 15N of solid or liquid – 3 days x 5 reps. | EA-IRMS | 1 g | 21 | |
| 15N and 13C of solid or liquid – 3 days x 5 reps. | EA-IRMS | 1 g | 21 | |
| Oxygen Isotope Analyses | ||||
| 18O of water – 3 days x 5 reps. | equilibration | 20 mL | 21 | |
| 18O & 2H of water – 3 days x 5 reps. | equilibration | 20 mL | 21 | |
| Sulfur Isotope Analyses | ||||
| 34S of organic sample – 3 days x 5 reps. | EA-IRMS | 1 g | 21 | |
| 34S of inorganic sample – 3 days x 5 reps. | EA-IRMS | 1 g | 21 |
Standard Callibration Services Next Steps
For further information on our standard callibration services, please Email us or request pricing here.
The calibration of the stable isotopes in any sample supplied to us involves the following steps:
(1) Booking in and inspection of the sample upon receipt.
(2) Preparation of the sample for analysis.
(3) Five replicate measurements of your sample against traceable standards.
(4) Repeat step (3) on two further days.
(5) Collation and interpretation of all sample and QC data into a laboratory report.
(6) Advice on how best to store your sample for use as a working standard.
(7) Issue of a certificate of analysis to you and return of any unused sample material.