YAKHAK HOEJI

Table. 3.

Table 3Uncertainty calculated from each uncertainty factors

Uncertainty factors			Combined standard uncertainty	Relative standard uncertainty		Degree of freedom
Dilution process for reference materials	Dilution 1X	1/1 mL	0.00068	0.00068		167
	Dilution 10X	0.1/0.1 mL	0.00014	0.00140	0.0016	23
	Dilution 10X	0.9/1 mL	0.00071	0.00079	0.0016	23
	Dilution 100X	0.1/0.1 mL	0.00014	0.00140	0.0016	23
	Dilution 100X	0.9/1 mL	0.00071	0.00079	0.0016	23
	Dilution 500X	0.4/1 mL	0.00051	0.00128	0.0017	156
		0.8/1 mL	0.00064	0.00080
		0.8/1 mL	0.00064	0.00080
	Dilution 1000X	1/1 mL	0.00068	0.00068	0.0010	333
	Dilution 1000X	1/1 mL	0.00068	0.00068	0.0010	333
	Dilution 2000X	1/1 mL	0.00068	0.00068	0.0010	333
	Dilution 2000X	1/1 mL	0.00068	0.00068	0.0010	333
	Combined		-	0.0032		165
Dilution process for samples	Dilution 10X	0.1/0.1 mL	0.00014	0.00140	0.0016	23
	Dilution 10X	0.9/1 mL	0.00071	0.00079	0.0016	23
	Dilution 100X	0.1/0.1 mL	0.00014	0.00140	0.0016	23
	Dilution 100X	0.9/1 mL	0.00071	0.00079	0.0016	23
	Dilution 1000X	0.2/0.2 mL	0.00020	0.00099	0.0015	104
		0.9/1 mL	0.00071	0.00079
		0.9/1 mL	0.00071	0.00079
	Dilution 2000X	1/1 mL	0.00068	0.00068	0.0010	333
	Dilution 2000X	1/1 mL	0.00068	0.00068	0.0010	333
	Dilution 3000X	1/1 mL	0.00068	0.00068	0.0015	39
	Dilution 3000X	0.5/1 mL	0.00068	0.00135	0.0015	39
	Dilution 4500X	0.6/1 mL	0.00056	0.00093	0.0019	74
	Dilution 4500X	0.3/1 mL	0.00051	0.00169	0.0019	74
	Combined		-	0.0038		223
Calibration curve measurement using reference materials			1.091	0.0088		4
Sample measurement			2.187	0.0062		35