>Hi Valerie,
>
>We have measured the d13C and d15N values sporatically over the last 
>couple of years and got the following:
>
>>NIST 2711 Montana Soil : d13C = -17.35 +-0.24 (n=8), d15N = +7.36 
>>+- 0.26 (n=3)
>>
>>NIST 8704 Buffalo River Sediment : d13C = -19.47 (n=1), d15N = 4.30 
>>+- 0.27 (n=3)
>
>Cheers,
>Steve
>
>
>At 07:29 PM 4/12/2007, you wrote:
>>Hello listmembers,
>>
>>Has anyone calibrated  these soils as a standard for %C,N  and C,N
>>isotopes. Any numbers available will be gratefully appreciated.
>>
>>NIST 2711 Montana Soil (moderately elevated trace element conc)
>>NIST 2709 San Joaquin Soil
>>NIST 8704 Buffalo River Sediment
>>
>>Thank you,
>>Valerie
>>
>>*******************
>>Valerie Claymore
>>Lab Manager
>>Rafter Stable Isotope Lab
>>GNS Science
>>30 Gracefield Road
>>Lower Hutt
>>New Zealand
>>phone  +64-4-570-4645
>>fax +64-4-570-4657
>>***********************
>
>Stephen Taylor
>Lab Manager, Isotope Science Lab,
>University of Calgary, Physics & Astronomy,
>2500 University Dr. N.W.
>Calgary, Alberta,
>Canada, T2N 1N4
>(p) 403 220 8268
>(f) 403 220 7773
>[log in to unmask]
>www.phas.ucalgary.ca/isl