一、照片停显照片停显之后,置入酸性停显液中停显。目的是用停显液中的酸将照片所含碱性显影液加以中和。它的作用是:(1)防止照片继续再显影,固定照片的深浅色调;(2)避免直接定影产生显影花斑;(3)保证和延长定影液的使用期限。停显液的配方是:清水1000毫升,加入98％的冰醋酸10～20毫升。停显时间5～10秒。 First, the photos were stopped photos stop display, into the acid stop solution was stopped. The purpose is to neutralize the alkaline developer contained in the photograph with the acid in the stop solution. Its role is to: (1) prevent the picture from developing again, fix the light and shade of the picture; (2) to avoid the direct fixing to produce the developing spot; (3) to ensure and prolong the service life of the fixing solution. Stopping fluid formula is: 1000 ml of water, add 98% of the glacial acetic acid 10 to 20 ml. Stopped time 5 to 10 seconds.