GB/T 2 2906.2 - 2 008 is the second part of the paper core measurement series of standards, which mainly stipulates the temperature and humidity treatment method of paper core samples. The standard clarifies the environmental conditions, processing time and operation procedures of temperature and humidity treatment, and requires the paper core samples to be placed in a specific temperature Humidity (such as 23 +/- 1 ℃, 50% +/- 2% RH) environment for equilibrate treatment to eliminate the influence of environmental factors on subsequent paper core performance testing, ensure the accuracy and Reliability of the test results, and provide a unified standard for paper core performance measurement. Pretreatment standard.