Blood Identification Practical: Test 2

Test 2 was the luminol test. The iron present in blood catalyzes the chemical reaction that leads to the luminescence of the blood.

The one on the left is Sample 5, the one of the right is Sample 6 and of course the one at the top is Sample 4.

As you can see in the photo, Sample 4 glowed the brightest, but Sample 6 also glowed for a brief period of time. Sample 5 did not glow.

After adding the luminol. The luminol test narrowed down the possible samples of blood to Samples 4 & 6.