供应美国NIST可追溯动物血清中的无机成分标准物质SRM1598a
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This Standard Reference Material (SRM) is a serum sample derived from a mixture of serum from healthy bovine and porcine animals collected under strict protocols designed to preserve the original composition and to minimize contamination [1]. The SRM is intended primarily for use in calibrating instrumentation and evaluating the accuracy of analytical methods for selected elements in blood serum, plasma, and similar biological fluids. A unit of SRM 1598a consists of two capped polyethylene vials, each containing 5 mL to 6 mL of frozen serum. 美国NIST可追溯
Certified Concentration Values: Certified values for concentrations for elements are provided in Table 1. The certified values are based on results from either a primary analytical technique carried out at NIST, or the combined results from two or more chemically independent analytical techniques obtained at NIST and collaborating expert laboratories [2]. A NIST certified value is a value for which NIST has the highest confidence in its accuracy 动物血清中的无机成分标准物质 in that all known or suspected sources of bias have been investigated or accounted for by NIST.
Reference Concentration Values: Reference values for concentrations for additional elements are provided in Table 2. Reference values are non-certified values that are the best estimate of the true value. However, the values do not meet the NIST criteria for certification and are provided with associated uncertainties that may reflect only measurement precision, may not include all sources of uncertainty, or may reflect a lack of sufficient statistical agreement among multiple analytical methods [2].
本标准参考物质（SRM）是从健康牛和猪的血清混合物中提取的血清样品，根据严格的方案收集，旨在保存原始成分并最大限度地减少污染[1]。SRM主要用于校准仪器和评估血清、血浆和类似生物流体中选定元素的分析方法的准确性。SRM 1598a的一个单元由两个带帽的聚乙烯小瓶组成，每个小瓶含有5毫升至6毫升冷冻血清。
认证浓度值：表1中提供了元素浓度的认证值。认证值基于NIST进行的一种主要分析技术的结果，或NIST和合作专家实验室获得的两种或两种以上化学独立分析技术的组合结果[2]。NIST认证值是指NIST对其准确性具有最高信心的值，因为NIST已经调查或解释了所有已知或怀疑的偏差来源。
参考浓度值：表2中提供了附加元素浓度的参考值。参考值是未经认证的值，是对真实值的最佳估计。然而，这些值不符合NIST的认证标准，并且具有相关的不确定性，这些不确定性可能只反映测量精度，可能不包括所有不确定性来源，或者可能反映多种分析方法之间缺乏足够的统计一致性[2]。
Unit of Issue: 2 vials x 5 mL SRM1598a
Unit Description: A unit consists of two capped polyethylene vials, each containing 5 mL to 6 mL of frozen serum.
Product Expiration Date: 01 October 2024
Revision History:10 January 2017 (Change of expiration date; editorial changes).
NIST Storage Temperature: Freezer (-80 o C)
Please see certificate for user storage information regarding this material.
Safety Information
Table(s) of Related Materials 105.01
Certificates of previous issues of this material are available here.