GB/T 16106-1995 specifies the acid-base titration method for the determination of sodiumhydrate in the air of the workshop. This method is suitable for the detection of the air in the workshop. The content is determined by collecting air samples so that the sodiumhydrate in it has an acid-base neutralizing reaction with a specific acid. The standard specifies the required instruments, such as samplers, Burette, etc., and specifies the requirements for reagents. The air sampling steps are described in detail, including Sampling time, location and method, and then the titration operation process is described, such as the addition of acid titrant, indicator selection and end point judgment. According to this standard, the content of sodiumhydrate in the air of the workshop can be accurately determined to ensure the safety of the