在饮用水行业，使用在线粒子计数器监测水质是一项相对较新且功能强大的技术。由于这些设备的校准非常复杂，通常很难在现场实施，因此现在要求最终用户进行校准验证。校准验证应确认新的和在用的在线粒子计数器的性能。本研究的目的是为在线粒子计数器开发一个简单的校准验证程序，该程序可以在计数器上执行，而无需将其从采样点区域移除。该程序使用定义的标准和简化的粒子注入系统。该标准是颗粒计数和尺寸标准的组合，所有值均已确定并可追溯至NIST。

The use of in-line particle counters to monitor water quality is a relatively new and powerful technology in the drinking water industry. Because the calibration of these devices is very complex and generally difficult to practice in the field, calibration verification by the end user is now being requested. The calibration verification should confirm the performance of both new and in-use in-line particle counters. The objective of this research was to develop a simple calibration verification procedure for in-line particle counters that can be performed on counters without having to remove them from the sample site area. The procedure uses a defined standard and a simplified particle injection system. The standard is a combination particle count and size standard, with all values identified and traceable to NIST.