ralfy review 1101 Extras – Parafilm Problems.

Parafilm is a semi-transparent, flexible, and stretchy laboratory film used to seal containers like test tubes, beakers, and petri dishes. It is a blend of waxes and polyolefins that is self-sealing, waterproof, and moisture-resistant, yet also gas-permeable. This makes it ideal for preserving samples and preventing spills or evaporation in scientific labs.