详细描述：
Parafilm M is the all purpose laboratory film. Parafilm M is semi-transparent, flexible, thermoplastic, highly waterproof sheet material. The unique properties of Parafilm M make it ideal and adaptable for many important laboratory uses and techniques.
Available in four functional roll sizes - 4 inches x 125 feet, 4 inches x 250 feet and 2 x 250 feet. Also available is a one-handed, automatic dispenser for both 2 and 4 inch wide rolls.
All-Purpose Moisture-Barrier Film
Flexible Thermoplastic
Self-Sealing
Calibrated for Easy Cutting
Odorless
Moldable
