论文部分内容阅读
我们卫生科X线室,为了节约定影药,过去曾采用过盘定影法,将一加仑定影粉分两次配制使用。实践证明,盘定影法有以下缺点:(1)同时不能给两张片子定影,因会互相重叠、磨擦,定影不均匀,影响照片质量;(2)由于来回装倒定影液,耗损较大;(3)盘定影时,药液与空气的接触面较广,容易气化,因而使有效期大大地缩短;(4)在定影时不能兼做其它工作。因此,从1959年12月起,我们改用了桶定影法,即一次配两加仑定影液,使用到1960年年底,共洗片4823平方时。但用该法定影时,胶片要15分钟才能完全透明。后来我们又根据硫代硫酸钠(大苏打)的主要
Our Health Department X-ray room, in order to save the fixing of drugs, in the past have used the disk fixing method, the one-gallon fixing powder formulated twice. Practice has proved that the disc fixation method has the following disadvantages: (1) At the same time can not be two films fixing, because they overlap each other, friction, fixing uneven, affecting photo quality; (2) (3) disc fixing, the liquid contact with the air is wider, easy to gasification, thus greatly reducing the validity period; (4) in the fixing can not do other work. Therefore, starting from December 1959, we switched to the bucket fixing method, that is, two gallons of fixing solution at one time, using the end of 1960, a total of 4823 square washes. However, using the method of statics, the film to 15 minutes to be completely transparent. Later we again according to the main sodium thiosulfate (soda)