This test paper allows the quick and sensitive detection of blood traces. In criminal investigations it is used as a rapid screening test.

• Colour change: White to blue

The test paper uses the pseudo-peroxidatic effect of blood. The material in question is allowed to soak in water for about one minute.

Then the test paper is pressed to the sample. Blood traces lead to a distinct discolouration within a few seconds. The test papers are single sealed in plastic. This ensures safe results at any time.