Although the weight change in the time of use is small, using is superior selfishly with while the discharge quantity of the silver ion is maintained in the specified range, the color change prevention effect which is superior and the mixed anti-bacterial characteristic glass where you can obtain identification characteristic are offered. The coloration anti-bacterial characteristic glass and the non anti-bacterial characteristic glass which show the anti-bacterial effect by discharging the silver ion and, being the mixed anti-bacterial characteristic glass which is included, as largest diameter of the coloration anti-bacterial characteristic glass (t1) it makes value inside the range 3 -, 30mm at the same time, it contains the inorganic type colorant as the combination component, 0.001 - 0.5 weight % it makes value inside the range the addition quantity of the particular inorganic type colorant, vis-a-vis the entire quantity.使用時における重量変化が小さく、使い勝手に優れる一方、銀イオンの放出量を所定範囲に維持したままで、優れた変色防止効果や識別性が得られる混合抗菌性ガラスを提供する。銀イオンを放出することによって抗菌効果を発揮する着色抗菌性ガラスと、非抗菌性ガラスと、を含む混合抗菌性ガラスであって、着色抗菌性ガラスの最大径(t1)を3~30mmの範囲内の値とし、かつ、配合成分として、無機系着色剤を含有するとともに、当該無機系着色剤の添加量を、全体量に対して、0.001~0.5重量%の範囲内の値とする。
