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中文名稱：水中2H and 18O
英文名稱：Water 2H and 18O訂貨以英文名稱為準。
產(chǎn)品編號：GRESP-4x4mlCAS：/
品牌：標準物質(zhì)產(chǎn)地：進口
標準值：見證書分子式：/
規(guī)格 市場價(元) 折后價(元) 供貨周期 數(shù)量 加入購物車 4*4ml 0.00 0.00 3-4周 加入購物車
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產(chǎn)品詳細介紹
GRESP-4x4mlWater 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:
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