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中文名称：水中2H and 18O
英文名称：Water 2H and 18O订货以英文名称为准。
产品编号：GRESPCAS：/
品牌：标准物质产地：进口
标准值：见证书分子式：/
规格 市场价(元) 折后价(元) 供货周期 数量 加入购物车 20ml 0.00 0.00 3-4周 加入购物车
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产品详细介绍
GRESPWater 2H and 18O
GRESP (Greenland Summit Precipitation) has been prepared at the IAEA to provide a water quality control material to check the calibration by the VSMOW2 and SLAP2 international measurement standards. GRESP is certified for its hydrogen and oxygen stable isotopic composition, on a δ-scale as defined by the isotopic compositions of the two water international measurement standards VSMOW2 and SLAP2 and denoted with δ2H VSMOW-SLAP and δ18O VSMOW-SLAP.
Analyte
Reference value
Unit
Combined standard uncertainty
(at 1 sigma level)
R/I/C
δ2H
-257.8
‰
0.4
R
δ18O
-33.39
‰
0.04
R
δ2H and δ18O reference values for the certified reference material GRESP and the associated combined standard uncertainties (1σ level; using a coverage factor of k=1), all expressed on the respective VSMOW-SLAP scale.
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)Limit of distribution:
Please note that distribution of GRESP is limited o 3 units within 3 years per end user.Additional recources:
