Sulfur dioxide and sulfite are common food additives, which have the functions of bleaching, antisepsis and antioxidation. Excessive intake of sulfur dioxide on the human respiratory system, liver and blood toxic side effects, can lead to damage to human immunity. The most common symptoms include dyspnea, shortness of breath, asthma and cough. Lifeasible developed the detection method for the residual amount of sulfur dioxide in all kinds of food. This product is based on that Sulfur dioxide or sulfite reacts with the reagent to produce purple or purplish red products. The darker the color, the higher the content. The product is suitable for rapid detection of sulfur dioxide residues in dried fruits, dried vegetables, preserves, preserved fruits and other foods, with detection limit of 1mg / kg (based on sulfur dioxide). The reagent was sealed at 2-8°C and stored in dark for 12 months.

https://www.lifeasible.com/p/2663/sulfur-dioxide-rapid-detection-kit/

As a biotechnology company, Lifeasible is specialized in agricultural science, offering a wide variety of agro-related services and products for environmental and energy solutions.