Table 1.

Test results for the detection of a drop of human blood -0.05 ml- considering different surfaces.

Surface Configuration	On Steel	On Washed Cotton	On Wood	On Tile	On Denim Fabric	On ABS Plastic	On Cotton	Under Acrilic Paint	On Nylon
Lens type	quartz	quartz	Crown glass	Crown glass	Crown glass	Crown glass	Crown glass	Crown glass	Crown glass
Filter type	Kolari UV	Baader UVIR	none	none	Hoya R72	Hoya R72	Schott RG9	Schott RG9	Wratten 87
Illumination	365 nm	365 nm	415 nm	455 nm	720 nm	750 nm	850 nm	850 nm	950 nm
Capturing angle	25°	90°	45°	45°	90°	45°	45°	90°	45°
Surface’s reaction	reflectance	reflectance	reflectance	reflectance	transmittance	absorbance	reflectance	transmittance	transmittance