Completely light-tight, airtight and moisture proof Pb VACUPAC is the perfect daylight packaging. The STRUCTURIX X-ray films with Pb screens have a standard thickness of 0.027 mm and are vacuum-packed in a completely light tight, airtight and moisture proof foil complex. The foil, a spin off from space technology, is a metallic polymer involving the deposition of vaporized aluminum under vacuum. The synthetic foil ensures that VACUPAC can be used under extremely dirty and damp conditions. Pb VACUPAC is ideal for applications with energies higher than 100 kV. Extra VacuumProtection Each pack of 100 sheets is supplied “in vacuo” to preserve the vacuum well beyond the expiration date.