What type of blood contamination allows porous items to be possibly restorable?

The type of blood contamination that allows porous items to be possibly restorable is spatter. When blood spatter occurs, it creates a pattern of droplets that may adhere to surfaces. While porous materials like fabric or untreated wood can absorb liquids, the nature of spatter can allow for the potential recovery of some items by using specialized cleaning techniques.

Spatter consists of fine droplets and can sometimes rest on surfaces without being fully absorbed, which might give a chance for restoration or cleaning if the right methods are employed. This restoration process can involve careful cleaning techniques that focus on minimizing further damage to the porous material.

In contrast, pooling involves larger amounts of liquid blood collecting in a specific area, which can be more difficult to treat as the blood may soak deeply into the porous material, making restoration challenging. Drippings also refer to blood that has dripped off a surface, leading to similar issues with absorption and potential damage to the underlying material. Stains refer to any mark left on a surface and imply a level of absorption that would likely hinder restoration efforts.