First there was alcohol breathalyzer. Now there’s a portable drug detector. Instead of laboratory testing that takes a long time to obtain results, a sophisticated device can be used to screen individuals who appear to be under the influence of drugs. The drug detector can measure traces of cocaine, heroin, cannabis, and methamphetamines. It uses a cartridge that has sample gathering saliva, and a measurement chamber that contains magnetic nanoparticles. Using frustrated total internal reflection, the cartridge absorbs the saliva then analyzes it.

The results of the analysis are displayed on an LCD screen with a simple color-coded readout. Look for additional information such as “related links” additional sites,” further reading and the like, it is important that you know where the author got all the information. And even when links are available, it is also important to check that the links work. Although all these may sound too time-consuming, but think evaluating websites as a responsibilities.