Rapid detection kit for suspended white particles in food

Hanging white block, chemical name formaldehyde sodium bisulfite, also known as "carved white block", is made by combining formaldehyde with sodium bisulfite and then reducing it,. It is a commonly used chemical in dyeing technology. Used for food processing, it has the functions of bleaching and increasing yield. After adding suspended white pellets to food, residual decomposition products such as formaldehyde and sulfite will remain in the food. Long term consumption can cause great harm to the human body and easily lead to various diseases. The Ministry of Health's "Emergency Notice on Prohibiting the Use of Non Food Additives in Food" and "Hygiene Standards for the Use of Food Additives" both stipulate that the addition and use of non food additives in food is strictly prohibited. Only allowed to use hanging blocks in industry.

This rapid testing kit uses suspended white blocks in food to partially decompose into formaldehyde and sodium bisulfite after soaking in water for a certain period of time. The extracted solution reacts with the detection reagent to produce a purple red product, and the depth of the purple red color is proportional to the concentration of the suspended white blocks. Can determine if there are any suspended white blocks added to the sample. Protein, fat, sugar, acetaldehyde, acetaldehyde, methanol, ethanol, sulfite, sulfur dioxide and other food components or structurally similar substances do not interfere with this determination method.