SN/T 4265-2015 "Food contact materials, determination of 4-methylbenzophenone and benzophenone content in auxiliary materials inks, gas chromatograph Mass spectrometry", specifies the determination method of 4-methylbenzophenone and benzophenone content in food contact materials auxiliary materials inks. The standard details the operation procedures such as sample pretreatment, gas chromatograph Mass Spectrometer parameter setting, and clarifies the qualitative and quantitative analysis rules of substances to ensure accurate detection of the content of relevant substances. Provide technical support for ensuring the safety of food contact materials.