RGB quantitative quick detecting test paper for formaldehyde residue in food

The invention relates to an RGB quantitative quick detecting test paper for formaldehyde residue in food, and belongs to the field of food security detection. The RGB quantitative quick detecting test paper just comprises two parts of a paper base and a developing paper scrap; structure and operation are simple; 3 mm chromatography filter paper is adopted as a carrier; the test paper can conduct quick semiquantitative and RGB quantitative detection on formaldehyde residue in 8-10 min; accurate quantitative detection conclusion can be acquired by observing by eyesight or reading RGB of the test paper color; a precious instrument is not needed to display; a user can grasp the test paper without special training; meanwhile, the test paper is cheap in price and low in manufacturing cost, is disposable without inspection, repair and maintenance, and is relatively high in degree of accuracy, good in repeatability, and very suitable for on-site real-time quick detection and monitor.