从废定影液中提取白银,《感光材料》也时有介绍,但所谈方法对于基层小型照相部门来说,限于条件及定影液用量较少,均不甚实用。这里介绍一种用一般都易找到的器材,自制设备,提取白银的方法。一、直流电源:闪光灯电瓶充电用的“四用充电器”一只,或晶体管收音机用稳压电源一只(见图1)。 The extraction of silver from the waste fixer, “photosensitive materials” are also sometimes introduced, but the method for the grass-roots small camera department, limited to the conditions and the amount of fixing fluid less, are not very practical. Here is a commonly used easy to find equipment, home-made equipment, the method of extracting silver. First, the DC power supply: Flash battery charging with a “four charger” or a transistor radio with a power supply (see Figure 1).