To provided a mixed antibacterial glass which stably controls the silver ion elution amount from the antibacterial glass into the drain water in an air conditioning system, thereby effectively preventing the occurrence of microorganisms in the drain water.The mixed antibacterial glass achieves antibacterial effect by releasing silver ions, and contains an antibacterial glass which shows alkalinity when dissolved, and another antibacterial glass which shows acidity when dissolved, the silver ion elution amounts from the antibacterial glasses showing alkalinity or acidity being within certain ranges as measured under certain conditions, the compounding amount of the antibacterial glass showing alkalinity being from 10 to 100 parts by weight with reference to 100 parts by weight of the antibacterial glass showing acidity, and the total silver ion elution amount being within a certain range as measured under certain conditions.本發明提供一種混合抗菌性玻璃,其係穩定的控制空調設施等之冷凝水中的來自抗菌性玻璃之銀離子溶出量,能夠有效的抑制冷凝水中之微生物的產生。該混合抗菌性玻璃通過釋放銀離子發揮抗菌效果,包括溶解時顯示鹼性的抗菌性玻璃及溶解時顯示酸性的抗菌性玻璃,顯示鹼性的抗菌性玻璃之以規定測定條件測定的銀離子溶出量、以及顯示酸性抗菌性玻璃之以規定測定條件測定的銀離子溶出量為各自規定範圍內的值,相對於顯示酸性的抗菌性玻璃100重量份,顯示鹼性的抗菌性玻璃之配合量為10~100重量份範圍內的值,並且以規定測定條件測定的總銀離子溶出量為規定範圍內的值。縱座標...銀離子溶出量(mg/(g‧1L‧24Hrs‧30℃))橫座標...初期pH(-)
