-
-
- 您現(xiàn)在的位置：首頁 >> 產品中心 >> 標準物質 >> IAEA標準物質IAEA標準物質
-
-
中文名稱：糙米
英文名稱：Brown Rice Grains(temp. not available)訂貨以英文名稱為準。
產品編號：IAEA-464CAS：/
品牌：標準物質產地：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 200g 0.00 0.00 3-4周 加入購物車
-
產品詳細介紹
IAEA-464糙米Brown Rice Grains, 200g (temp. not available)
The raw material was collected by the Japanese food control authorities. The material was homogenized in one lot using a large volume, low speed homogenizer in the Radioanalytical Reference Laboratory (RRL) of the Food and Feed Safety Directorate in Hungary. To avoid any abrasion of the outside layers of the grains, the samples are sealed in vacuum bags. The packing unit is 200g, which is enough for 100-200 cm3 cylindrical geometry.
Certified values for massic activities (based on dry mass)
Reference date for decay correction: 1 January 2015Radionuclide Certified value [Bq kg-1] Uncertainty* [Bq kg-1] Half life 40K 72.1 3.2 [1.2504(30)]x109 years 134Cs 12.0 0.4 2.0644(14) years 137Cs 38.6 0.8 30.05(8) years * The uncertainty is expressed as a combined standard uncertainty with a coverage factor k = 1 estimated in accordance with the JCGM 100:2008 Evaluation of measurement data – Guide to the expression of uncertainty in measurement.
