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This standard specifies a method for testing the corrosivity of disinfectants spray against metallic materials, including instruments, reagents, preparation and pretreatment of the test specimens, test conditions, test methods, calculation of corrosion rate, reports, etc.
This standard is applicable to the determination of corrosion of disinfectants spray to metal materials. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Disinfectant can kill pathogenic microorganisms on the transmission media. Thus, disinfectant play an important role in our daily life. The disinfectants can be divided into alcohol disinfectant, chlorine disinfectant, bromine disinfectant, iodine disinfectant, peroxidation disinfectant, guanidine disinfectant, phenolic disinfectant, quaternary ammonium salt disinfectant, etc. The disinfectants containing chlorine, bromine, iodine and peroxides are all oxidizing disinfectants and have obvious metal corrosivity. Especially the disinfectant containing chlorine, with high efficiency, widely used, low price, but disinfectants of this kind have the most serious corrosivity. In addition, the quaternary ammonium salt disinfectant is also corrosive to copper and aluminum materials. The corrosivity of disinfectant to metal and alloy limits its safety and wide application to some extent. It is important to note that the improper use of large quantities of disinfectants may lead to unforeseen hazards in the future. Corrosivity is one of the identified test items of disinfectant, being involved in the national standard and many industrial standards in China.
At present, the use methods of disinfectants include total immersion, spray and scrub. Total immersion and scrub methods are used for the disinfection of object surface. The spray method is used for the disinfection of the surface and the air. There are three advantages of the spray method. First, the spray method could be applied in many occasions. Second, the spray method can use mechanical or automatic equipment for disinfection. Third, the work efficiency of the spray method is high. Therefore, the spray method is the most widely use disinfection method.Currently, ISO/TC156 has no corrosion detection standard for spray method of disinfectants, and no other ISO/TC has a similar standard. Therefore, we believe that in the current situation, it is of great practical significance to establish a scientific and perfect international standard for corrosion detection of disinfectants spray. The publication of the standard will provide a basis for the detection of disinfectants sprayprovide standard assistant for research, production, application and global trade in disinfectant field and help prevent potential hazards caused by improper use of disinfectants worldwide.
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