Device for rapidly detecting sweetening agent saccharin sodium in dry food packaging paper

The utility model discloses a device for rapidly detecting sodium saccharin serving as a sweetening agent in dry food packaging paper. The device comprises an air supply part, an extraction sample injection part, a color development part and a back extraction agent supply box, the gas supply part is communicated with the upper end of the extraction sample injection part through a pipeline; the color developing part is provided with an upper opening and a side opening; the upper opening is communicated with the lower end of the extraction sample injection part; the side opening is communicatedwith the back extraction agent supply box; all the pipelines are hoses, the material can be rubber or silica gel; the extraction sample injection part is used for being filled with extraction agent water and sample dry food packaging paper, the color developing part is filled with a color developing agent methylene blue solution, a back extraction agent is trichloromethane containing a small amount of ethyl alcohol, and t