由于光散射式数字式粉尘测试仪性能稳定、灵敏度高，测量方便而广泛的应用于各类测尘应用。

Since the digital light scattering dust test instrument is quite steady, sensitive and convenient in measurement, it can be used in many kinds of dust testing applications.

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光散射式尘埃粒子计数器是用来测量空气洁净度的重要仪器，粒子计数器的主要测量误差为重叠损失误差。

Airborne particle counter (APC) is important instrument for air cleanliness certification in cleanroom. The main error of APC is coincidence loss.

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文中介绍了光散射式数字粉尘测试仪各项指标的具体标定方法，并结合实际应用，总结了使用过程中应注意的事项。

This paper introduced the calibration of digital light scattering dust test instrument and mentioned some key points in measurement process.

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