Quick test box of white block in flour Mantou Rolls of dried bean milk creams

Quick detection box for white block in flour Mantou Rolls of dried bean milk creams $r $n Model/specification: ZYD-DBK/50 times $r $n Test item: white block detection $r $n Product purpose: white block quick detection kit is suitable for fast detection of white block in noodles, Rice noodles, Rolls of dried bean milk creams, flour, Mantou, noodles, bamboo shoots, rice cakes, sugar and other foods. Product keywords: White block rapid detection box, White block rapid detection box, White block rapid detection box in flour

Hanging white block, also known as carved white block, chemical name formaldehyde sodium bisulfite, has bleaching and anti-corrosion effects. Due to its significant harm to human health, it is explicitly prohibited by the state from being added to food. This method is applicable to the rapid detection of sodium hypochlorite in vermicelli, Rice noodles, Rolls of dried bean milk creams, flour, Mantou, noodles, bamboo shoots, rice cakes, sugar and other foods.

Take 2-3 grams of shredded sample into a test tube or vessel, add double the amount of water, soak for 5-10 minutes, take 1ml of soaking supernatant into a 1.5ml centrifuge tube, add 1 drop of No.1 reagent, then add 2 drops of No.2 reagent, cover and mix well. After 1 minute, add 2 drops of No.3 reagent, mix well, and let it stand for 3 minutes to observe the color change of the solution.

【 Result judgment 】
If there is no change in the sample solution or the experimental result is the same as the blank solution, it is a negative result. If the sample solution appears orange, it is a positive result. Any food that contains suspended white pellets will exceed the sulfur dioxide limit. Therefore, when a sample shows a positive result for hanging white blocks, the sulfur dioxide content in the sample can be detected. If the sulfur dioxide content is greater than 0.2g/kg, it can be further determined that hanging white blocks have been added to the sample.

Storage conditions and expiration date
The reagent is stored at room temperature and has a shelf life of 1 year.

Beijing Zhiyunda Technology Co., Ltd. has been engaged in the research and development of food safety rapid testing products since 2005. It has a dedicated research and development institution and has established a high-tech talent team mainly focused on food safety testing, chemical analysis, computer software and hardware, and optical instrument development. The team is composed of multiple doctoral and master's degree holders. The R&D personnel have deep theoretical knowledge and rich practical experience, and are a highly integrated R&D team that combines cutting-edge professional technology with applied practice. At the same time, through extensive cooperation with professors and experts from universities and research institutions such as the School of Food Science at China Agricultural University, the School of Chemistry at Peking University, the Standard Quality Center of the National Grain Administration, and the Center for Disease Control and Prevention, six series of food safety rapid detection products have been developed: food safety rapid detection reagent kit, detection box, food (agricultural product) detection instrument, dry chemical test paper, veterinary drug residue colloidal gold rapid detection card, and antibiotic detection reagent kit. The company has currently obtained a total of 18 various licenses and 26 computer software copyright registration certificates, with over 400 products and technologies in 6 major categories.