College of Agriculture and Bioresources

Price List

EA-IRMS

Elementar isoprime precisION IRMS with vario Pyro cube and vario Liquid Sampler analyzes stable isotopes of solid samples of C, N, H, O, S and liquid H, O

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GHG/EA-IRSM

Elementar isoprime precisION IRMS, vario Pyro cube and iso FLOW GHG analyzes stable isotopes of gas C, N, N2O, O and solid sample of C, N, H, O, S

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GC/LC-IRMS

Elementar precisION IRMS, Agilent 8890B GC with GC5  and Agilent 1260 II Bio-Inert HPLC & Liquiface analyzes stable isotopes of compound specific C, N, H

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Contact

For inquires and/or submissions, contact: 

 

Solid Bulk EA-IRMS Sample Submission

Before shipping or submitting samples, please contact the lab via email. Please provide the sample type and analyses needed. Do not encapsulate samples before contacting the lab.

In order to determine needed sample weights approximate mass fraction values (N% & or C%) will be needed. If you don’t know what the approximate mass fraction(s) of your samples are, then 1 mg test samples can be submitted to the lab for mass fraction estimates. Please contact the lab before submitting test samples.

Solid Bulk EA-IRMS Sample Preperation

  • Samples need to be dried, ground and encapsulated in tin (SN) capsules.
  • Ball milled samples should pass through a 0.25 mm (US #60 mesh) sieve to be considered totally homogenized
  • Samples cannot be leaking!
  • Leaking samples will have errors in the mass fraction results.
  • Leaking samples have the potential to contaminated other samples.
  • Samples need to be 3 dimensional (not flat or long and thin)
  • Flat samples will get stuck in the carousel and be lost.
  • Samples need to be shipped in 96-well tray plates. Ensure that samples are packed to so they can’t jostle out of their “well” spot.
  • Paper or index cards may have to be placed on top of samples between the tray and the lid to ensure all sample remain in place.
  • All trays must be taped shut.
  • All samples and sample weights must be submitted to the lab using our supplied submission sheet (obtained by requests).
  • Three decimal place balance (in mg) should be used.

 

Examples of good sample encapsulation

Small Sample (1-8 mg)

Example of good small sample

Large Sample (9-75 mg)

example of large sample

 

Examples of unacceptable encapsulation or packaging

Flat sample. Small or large, this sample will get pinched in the carousel — Unacceptable

flat unacceptable sample

Long thin samples. These will not fit in the carousel — Unacceptable

long thin unacceptable sample