the upstream of Jiuan reagent -NC Membrane Beihua Co., Ltd. and light concentration technology icon.
NC membrane is called nitrocellulose membrane in Chinese. The core raw materials of Omicron kit, such as Jiu 'an.
The output of nitrocellulose in Beihua Co., Ltd. ranks first in the world: the production capacity ranks first in the world, with 6, tons/year, monopolizing more than 5% of the market and being the only one to compete with the international nitrocellulose giants. The price of NC will rise in theory, and the trend of northing is better than focusing.
nitrocellulose filter membrane (NC membrane for short) is used as the carrier of C/T line in colloidal gold test paper, and it is also the place where immune reaction occurs. NC membrane is one of the most important consumables in biological experiments, and its supplier is PALL (USA).
Cutting:
The film produced by the above steps is a product with extremely wide width, and the width is directly related to the size of the drum. The larger the drum, the more convenient it is to produce, but the higher the cost of the equipment. The wide film can only be a 25mm or 18mm (or 2mm) wide film we bought after cutting, and the length of the finished rolled film and the wide film is the same.
theoretically, the manufacturer can cut it into any width you need, but this will cause waste of raw materials and increase of labor cost. Later, in the process of coordination with the test paper manufacturer, the manufacturer basically determined the width mentioned above based on the comprehensive material cost and production convenience, and took this as the standard.
From the production process, we can know that surfactant has been added to the NC membrane itself to improve its hydrophilicity, and there is already a certain buffer system (although it will not have a great impact on the paper strip test).