| Measurement of origin in trade, growth in industrial production, at this stage, the measurement requirements of the state is toward the direction of scientific research and military changes in the international arena is also true, the current speed of technological development internationally very soon. With electronic technology, computers and the rapid development of software technology, instrumentation and testing technology along with a fundamental change, the traditional measurement theory, measurement techniques and methods can not meet the needs of the development of the new computerized testing system is along the , standardization and network direction. In addition, the caLiBration of our detection of the cause of the test in recent years of vigorous development, how to improve our operational level caLiBration test to ensure the accuracy of value transfer, and better for business, for social services has become the most important issue.In the rapid development of science and technology of today has become a measurement of the quality of the entire system an important part. Countries attached great importance to a number of initiatives taken to strengthen supervision of all types of measurement. Measurement of the cause of our being dispensable from the former up to the relationship between the quality of enterprise products and relationship status of the lifeblood of business survival.Acidity of the chemical laboratory equipment in one of the most common, with our daily lives; the wider use of scientific research, environmental protection, food, chemical industry, medicine, agriculture, aquaculture, such as almost all the areas, and the measurement system as a source of money an important part of the importance of acidity of pH meter caLiBration device also fully embodies.pH meter caLiBration device acidity of the existing models, we found such a number of questions. JJG 119-2005 laboratories based on pH (acidity) of test protocols, JJG 919-1996 acidity order of pH meter caLiBration device test can not fully meet the modern requirements of the acidity of detection, according to the acidity of the forthcoming new pH meter caLiBration device order, the pH meter caLiBration device of the need to carry out the development of acidity. Our objective is to develop an advanced, highly automated, in line with the acidity order of pH meter caLiBration device test all the items of the acidity pH meter caLiBration device. |