Pb and cs dating

A homonymy in Thamnophilidae: a new name for Chubb.

Aliabadian, M, N Alaei-Kakhki, O Mirshamsi, V Nijman & A Roulin. Phylogeny, biogeography and diversification of barn owls (Aves, Strigiformes).

CEN acquired a LECO CHN628 elemental analyzer, to determine percentages of carbon (C), hydrogen (H) and nitrogen (N) in soil samples. Samples must be dried, clearly identified and packed in plastic (or glass vials), or enveloped in aluminium foil or plastic bags (Ziploc type).

Avoid packaging the samples in paper or other organic material.

This procedure assures a never-ending following of the quality, accuracy and precision of the results given to customers.* Chemical pre-treatments are very important and must be proceeded with when quantities are adequate.However, for customers who know their sampling sites are clean, skipping pre-treatments will give these very small samples a better chance to be dated.*** Contact us to get the plastic vials that are used for counting, so weighing and capping can be done by yourself.AMS dating is possible on very small samples (a few milligrams).CEN has the equipment and expertise to prepare samples for AMS dating, which includes 2 major steps: C of your samples can also be done.

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Please fill the (PDF) (Word) for each sample submitted. Please contact us to get the plastic vials used in our counter (the transfer of the samples and capping into these vials can also be done by us at the lab). Compact the samples as much as you can in the vial and, if possible, try to get a similar height of sample for every vial.

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