Biological Blood Residue Contamination

Blood-residue contamination, it arises from biological sources like proteins and hemoglobin. When blood contacts surfaces, drying happens quickly and sticky layers form, thus oxidation and coagulation harden them over time. This residue embeds into microstructures rapidly after exposure, and unique reddish-brown staining with fluorescence under lights distinguishes it from inorganic dust or oils. Behavior on materials varies thus. On stainless steel, residue adheres firmly and causes corrosion, while crown glass and float glass suffer cracking from penetration. Borosilicate glass resists bonding deeper, yet fused silica and Gorilla glass still trap it in pores, so alumina and silicon carbide hold it in rough textures. Key challenges emerge in removal, tenacity demands aggressive methods and risks damage, solvents fail to dissolve bonds so contamination lingers in crevices. Laser cleaning addresses this effectively, pulses target organic bonds precisely and ablation vaporizes residues without heat spread, thus surfaces exhibit cleanliness and integrity preserves.