• 介紹：

     本標準物質主要用于測量儀器校準,分析方法評價和質量控制,以及藥品、食品等相關領域相應成分含量測定。

   

  一、樣品制備

  本標準物質候選物是通過定制相應阿魏酸純品，采用重結晶、柱層析等方法進一步純化后制得，經化學結構定性分析和初步理化分析滿足要求后，進行干燥分裝。

  阿魏酸：CAS號 537-98-4

   

   

  二、溯源性及定值方法

  經方法確認研究，本標準物質采用高效液相色譜法-二極管陣列檢測器(HPLC-DAD)和定量核磁兩種不同原理方法定值方式測定候選物質純度。通過使用滿足計量學特性要求的制備方法,測量方法和計量器具,保證標準物質的量值溯源性。

   

   

  三、特性量值及不確定度（不同批次略有差別，詳見證書）

  編號	名稱	標準值（%）	不確定度（%）(k=2)
  BW10001	阿魏酸	99.93	0.02

  標準值的不確定度綜合考慮了主體純度定值結果、均勻性、穩(wěn)定性等引入的不確定度分量。

   

   

  四、均勻性檢驗及穩(wěn)定性考察

  參照國家標準JJG 1006-94《一級標準物質技術規(guī)范》，隨機抽取分裝后的樣品，采用高效液相色譜法-二極陣列檢測器(HPLC-DAD)對候選物進行均勻性檢驗、穩(wěn)定性考察，檢驗結果表明均勻性和穩(wěn)定性良好。

  本標準物質最小取樣量為5mg。

  本標準物質有效期2年，研制單位將繼續(xù)監(jiān)測該標準物質的穩(wěn)定性，有效期內如發(fā)現量值變化，將及時通知用戶。

   

   

  五、包裝、運輸和貯存、使用及注意事項

  1.包裝: 本標準物質采用硼硅酸鹽玻璃安瓿瓶包裝，每瓶不少于50mg。

  2.運輸和貯存: 冰袋運輸,運輸時應避免擠壓,碰撞；冷藏條件下貯存。

  3.使用: 標準物質開封后，應盡快使用；二次使用不能再做標準物質使用。

   

   

  聲明

  1.本標準物質僅供實驗室研究與分析測試工作使用。因用戶使用或存儲不當所引起的投訴，不予承擔責任。

  2.收到后請立即核對品種、數量和包裝，相關賠償只限于標準物質本身，不涉及其他任何損失。

  3.僅對加蓋“上海源葉生物質檢專用章”的完整證書負責。請妥善保管此證書。

  4.如需獲得更多與使用有關的信息，請與技術部門聯(lián)系。

   

• 儲存條件： 2-8℃

• 注意：部分產品我司僅能提供部分信息，我司不保證所提供信息的權威性，僅供客戶參考交流研究之用。

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輸入產品批號：

本計算器可幫助您計算出特定溶液中溶質的質量、溶液濃度和體積之間的關系，公式為：

質量 (mg) = 濃度 (mM) x 體積 (mL) x 分子摩爾量 (g/mol)

• pg ng μg mg g kg =
  fM pM nM μM mM M *
  nL μL mL L *