1、YS/T581.18-2012的绝对差值不超过重复性限()，超过重复性限(r)的情况不超过5%。重复性限()按以下数据采用线性内插法求得。表2组分舍量/%重复性限(r)/%组分含量%重复性限(r)/%57.410.0380.0110.0023F61.440.042Fe()30.0260.003165.320.0360.1230.002930.730.0600.0790.0015Al32.100.115so-0.0950.001434.950.0730.7270.00370.0420.00150.00190.0006Na0.1130.0051P:()50.02690.00090.1200.006
2、90.14520.00210.0080.0014SiOz0.2850.01500.3870.02109.2允许差实验室间分析结果的差值不大于表3所列允许差。表3组分含量范围/%允许差/%组分含量范用/%允许差/%F57-650.60.0120.002Al30-350.3Fe:O0.012-0.0300.0030.0420.0150.030-0.1300.0040.0420.0800.0150.0080.007Na0.080-0.1000.024so0.008-0.0100.0090.100-0.1200.0580.010-0.8000.0120.050.0120.0020.001SiOz0.05-0.300.045P()50.002-0.0300.0020.30-0.400.0560.030-0.1500.00810质量保证与控制应用标准样品或监控样品，使用时至少每三个月校核一次本方法标准的有效性。当过程失控时，应找出原因，纠正错误后，重新进行校核。
