制样和化验精密度核验方法理解与探讨

Understanding and discussion on precision verification method ofsample preparation and test

依据CNAS-CL01:2005《检测和校准实验室能力认可准则》及《实验室资质认定评审准则》准则要求,结合精密度的试验方法及核验方法、制样和化验方差目标值的确定方法对制样系统进行精密度核查试验。建议应用标准时应将2种方法相互补充,以选择更加科学的采制样方案,有助于促进实验室改进制样和化验的程序,从而提高煤炭采样、制样、化验的总精密度。

According to the requirements of CNAS- CL01： 2005 Accreditation criteria for the competence of testing and calibration laboratories and The assessment criteria for laboratory accreditation, and combining with experimental method of precision and the verification method, determination method of variance target value of sample preparation and test, the precision verification experiments was done. It was indicated that when we applied the standard, this two methods should all be supplemented with each other, so the more scientific sampling and sample preparation plan could be selected, therefore, theimprovement of sample preparation and test process could be enhanced, and then, the total precision of sampling, sample preparation and test of coal could be improved.