单分散羧基二氧化硅微球

白色固体粉末，可以均匀分散在水及有机溶剂中，得到白色混悬液。单分散二氧化硅微球，具有粒径分布均一，纯度高的特点，可应用于显微学、细胞测量学、生物医学、过滤检测和流动原理研究等领域。 单分散的二氧化硅微球表面可以键合-NH2, -COOH, 白蛋白,蛋白A，环氧基，NTA, EDTA，链霉亲和素等基团，还可以连接荧光基团，形成功能化的荧光微球，用于偶联DNA，寡聚核苷酸，寡聚多肽，蛋白质，凝集素，抗体等。 【使用注意事项】 1. 二氧化硅微球可以长期存放在乙醇，甲醇，四氢呋喃等有机溶剂中，请勿在水中长期存放键合相二氧化硅微球，会造成键合相的流失。 2. 二氧化硅微球易被氢氟酸等含氟溶剂腐蚀，在强碱性条件下也会造成二氧化硅水解，在常温常压下使用pH范围为2-10。 3. 使用前水浴超声10 min有助于其均匀分散。 2.5 %（w/v）乙醇悬浮液。

White solid powder, It can be uniformly dispersed in an organic solvent and water and to become a white suspension. Uniform Silica Microspheres with uniform particle size distribution , high purity , and can be used in microscopy , cell measurements , biomedical , filtration and flow detection principle research and other fields. Uniform Silica Microspheres can be bonded to the surface of -NH2,-COOH, albumin, protein A, an epoxy group , NTA, EDTA, streptavidin -biotin and the like groups , fluorescent groups can also be connected to form a functional of fluorescent microspheres for coupling DNA, oligonucleotide , oligo peptides , proteins , lectins, antibodies and the like . [Precautions ] 1 Uniform Silica Microspheres can be long-term storage in ethanol , methanol , tetrahydrofuran and other organic solvents , do not long-term storage of bonded phase silica microspheres in the water , it will cause the loss of bonded phase . 2 Uniform Silica Microspheres easily fluorinated solvents and other corrosive hydrofluoric acid , under strong alkaline conditions can also cause silica hydrolysis using a pH range of 2-10 at room temperature and atmospheric pressure. 3 ultrasonic bath 10 min prior to use to help its dispersed. 2.5% (w / v) in ethanol