获取电话Conostan标准油单元素标准品0.05%
货号：150-200-005
带证书
浓度：500ppm±5ppm
产品描述：
This standard was prepared by weight measurements originating from assayed elementConcentrates. Element concentration for this standard is based on the Concentrate assay*value and was prepared to within the uncertainty value llsted above at the 95%ConfidenceInterval, as determined by weight measurements of blend components conducted on balancescalibrated and verified with NIST traceable weights.
本标准是由来自分析元素浓缩物的重量测量来制定的。本标准的元素浓度是基于浓缩分析值，并准备在上述95%信任区间的不确定度范围内，这一不确定度是由混合组分在平衡平衡上进行的重量测量确定的，并经NIST可追溯权重验证。
Each element Concentrate was assayed by classical wet chemical methods. Precision ofassay measurement is t0.5 percent maximum,but typically t0.3 percent,or less. Assayaccuracy is within one percent of measured value, but typically much less, as determined byco-measurement of,and traceability to, NIST Standards, or Certified Analytical Reagent GradeChemicals, if no suitable NIST Standard exists.
采用经典的湿化学法测定各元素的浓度。测定的精密度为0.5%，但通常为0.3%或更低。如果不存在合适的NIST标准，则精确性在测量值的1%以内，但通常要小得多，如NIST标准的确定和可追溯性，或认证的分析试剂分级化学品。
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