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中文名稱：Ammonium Sulfate Pure Substance 15N
英文名稱：Ammonium Sulfate Pure Substance 15N訂貨以英文名稱為準(zhǔn)。
產(chǎn)品編號：USGS25CAS：/
品牌：標(biāo)準(zhǔn)物質(zhì)產(chǎn)地：進口
標(biāo)準(zhǔn)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 0.5g 0.00 0.00 3-4周 加入購物車
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產(chǎn)品詳細介紹
USGS25Ammonium Sulfate Pure Substance 15N
Reference material USGS25 is aimed at δ15N calibrations.
USGS25 is a dried salt of ammonium sulfate [(NH4)2 SO4]) which was prepared in 1992 by J. K. B?hlke, U.S. Geological Survey [1]. The material was prepared from Fisher ammonium sulfate (A938-500, lot #915021) and Cambridge Isotopes ammonium sulfate (99.99% 14N; lot BI 1328) BI 1050) by dissolving and re-crystallizing a mixture of normal reagent salt and 15N depleted salt. The δ15N value of this reference material is the result of the statistical evaluation of interlaboratory comparisons [1,2].
Analyte
Value
Unit
SD
R/I/C
δ15N
-30.4
‰air N2
0.4
C
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
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