分量名称

标准不确定度

灵敏系数

合成不确定度

对照样(标准布)菌落数

$u_A\left(Z_C\right)=5.2830$

5.4743 × 10⁻³

$u_c^2\left(y_1\right)=8.3642\times {10}^{-4}$

移液器

$u_B\left(a\right)=0.001\text{mL}$

0.43429 mL⁻¹

$29u_c^2\left(y_2\right)=5.4697\times {10}^{-6}$

稀释液体积

$u_B\left(b\right)=0.057735\text{mL}$

0.043429 mL⁻¹

$17u_c^2\left(y_3\right)=1.0691\times {10}^{-4}$

洗出液体积

$u_B\left(V\right)=0.0\text{57735}\text{mL}$

0.021715 mL⁻¹

$2u_c^2\left(y_4\right)=3.1435\times {10}^{-6}$

待测试样菌落数

$u_A\left(Z_T\right)=120.24$

3.0251 × 10⁻³

$u_c^2\left(y_5\right)=0.13230$