The second day of the trial spent several hours on so-called "presumptive evidence," specifically field testing of suspected blood by crime scene investigators with chemicals such as luminol.

To conduct a luminol test, a solution that contains luminol powder ... This is then sprayed onto an area where blood may be found. If the solution touches any blood, then the iron in the blood ...

Other substances which can be detected, and told apart, include household bleach, rust, soda pop, and coffee – these are sometimes mistaken for blood when using luminol. In tests, the camera has ...

However, until now police scientists have been able to discover the traces of blood thanks to reagents such as luminol, phenophthalene or the human haemoglobin test, but the new detergents are ...

Human blood has to carry about 600 liters of oxygen ... The team also tried the luminol test, in which luminol binds to the free oxygen and emits blue light as energy (the same action that happens ...

To determine what is actually blood, investigators said they would swab and test areas that lit up after the Luminol process to see which areas came up “positive” for human blood. Stahlke ...

In lab tests, the luminol/artemisinin mix was found to be superior at distinguishing blood from other substances that produce chemically-similar types of stains, such as coffee, tea and brown sugar.

The researchers found that the method could distinguish blood from coffee, tea and brown sugar stains. They also obtained test results with the new luminol method using a smartphone, which could ...

"Some years ago we did a test in the Colorado desert where they put some blood on some rocks and we went back ten years later and we were able to find the blood using the Luminol test," said Dr ...

heroin and GHB test kits. NARTEC also makes both a color producing blood detection kit and a luminol kit for finding hidden blood. NARTEC is a distributor for Smith/Warren badges and for Main ...