Method Porous surfaces with blood latent fingerprints was soaked with sliver physical developersolution, sliver particles attached to latent fingerprints.
方法把检材浸泡在配制好的物理显影液中，还原的银粒子吸附在血潜手印部位显现出手印纹线。
2
In the actual production, each imaging are required to place control strip, copy of the network to track test and in line with actual situation, timely complement to the developersolution.
The metol content and the hydroquinol content in developersolution were analyzed by potential spectrum method. During this analysis, two components were continuously titrated at the same time.