Introduction
The purpose of this document is to give you an overview of the main technical points regarding the pH and conductivity measurements in ultra-pure water.
Ultra-pure water definition is reminded, general theoretical basis of pH and conductivity are presented and major influential parameters considered.

Hach超純水測量分析型錄介紹有關超純水 pH 值和導電度測量分析的主要技術概述。提醒有關超純水的定義，pH和導電度的一般理論基礎，並提及主要影響的測試參數。

 

For pH, the ASTM D5128 is the standard test method for on line pH measurements of water of low conductivity (< 100μS/cm).

www.astm.org/Standards/D5128.htm

For conductivity, the ASTM D5391 is the standard test method for electrical conductivity and resistivity of a flowing high purity water sample.
www.astm.org/Standards/D5391.htm

 

This document highlights why Hach® pH and conductivity products fulfill the requirements of ultra-pure water measurements.  

點進下方型錄封面圖片下載型錄來進一步了解為什麼 Hach® pH 和導電度產品能夠滿足超純水測試要求。