Two main approaches can be used for determining the age of an ink: indirect dating and direct dating. Indirect dating is based on the chemical analysis of an ink followed by comparison with known samples in a reference collection.

What is the need of basic tools for forensic examination document?

Even the simplest questioned document analysis lab contains basic video analysis tools, microscopes, digital imaging instruments, and UV and IR light sources. Other specialized equipment include electrostatic detection device and other tools for the application of analytical chemistry.