标准溶液配制标定记录(2)

1.14配制及日期基准物质及摩尔质量M邻苯二甲酸氢钾M=204.22干燥条件120℃至恒重配制标定依据GB/T601-2002标准溶液有效期2个月仪器用具室温℃19甲标定者乙标定者基准物质的质量m,g0.74500.74440.73630.74000.75220.75370.75060.7564标准溶液耗用体积V1mL33.72033.80033.50033.60034.08034.36034.17034.400空白试验标液耗用体积V2mL实际耗用标液体积mL33.72033.80033.50033.60034.08034.36034.17034.400温度补正系数mL/L0.2温度补正值mL0.0070.0070.0070.0070.0070.0070.0070.00720℃时标液耗用校正体积(V1-V2)mL33.72733.80733.50733.60734.08734.36734.17734.40720℃时标液浓度的计算值c,mol/L0.108160.107820.107600.107820.108060.107390.107540.10765单人四平行标液浓度的平均值,mol/L0.107850.10766双人八平行标液浓度的平均值,mol/L0.10776单人四平行测定结果极差的相对值R1,%0.520.62双人八平行测定结果极差的相对值R3,%0.72单人四平行临界极差的相对值R2,%0.670.83双人八平行临界极差的相对值R4,%0.98标准溶液浓度的报出结果,c,mol/Lc(Na2S2O3)=0.1021计算公式c=重复性要求检查测定结果极差的相对值与临界极差的相对值之差,单人四平行≤0.15%,双人八平行≤0.18%。|R1-R2|≤0.15%、|R3-R4|≤0.18%,取八平行平均值,保留四位有效数字为标定结果。甲标定者:乙标定者:校核:审核: