Heptane Solvent

Heptane: A highly volatile, fast-evaporating liquid solvent used in advanced camera scanning for “wet-mounting” film negatives and safely dissolving stubborn adhesive residues. When applied to a damaged negative inside a specialized glass-mount scanner fluid holder, heptane temporarily fills in fine surface scratches on the non-emulsion side. Because its refractive index closely matches that of the film base, it forces light to pass straight through the scratches without scattering, making them virtually invisible in your digital capture. It must be used with caution in a well-ventilated workspace away from open flames.