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Heathrow Scientific Parafilm M Sealing Film 100 mm x 38 m, Natural - HS234526B
$47.94 $44.58
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Heathrow Scientific Parafilm M Sealing Film 50 mm x 75 m, Natural - HS234526A

$43.86 $40.79
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SKU: HS234526A
California prop 65
Description

Description

  • Key performance benefit: Provides a tight, moisture-resistant seal to protect contents from contamination and evaporation.
  • Material & construction: Made from a blend of waxes and polyolefins, forming a flexible, self-sealing film that conforms to various container shapes.
  • Risk reduction/compliance benefit: Prevents moisture and volume loss while maintaining seal integrity on laboratory containers.
  • Protection level: Resistant to acids, alkalis, organic solvents, and up to 48 hours against saline solutions, inorganic acids, and alkaline solutions.
  • Comfort & usability: Stretchable up to more than 200% of its original length, allowing easy application over irregular surfaces.
  • Safety & compliance assurance: Non-toxic and odorless composition.

Recommended For

  • Sealing laboratory containers
  • Covering test tubes
  • Sealing flasks and beakers
  • Petri dish sealing
  • Sample protection
  • Preventing evaporation

Primary Industries

  • Laboratories
  • Medical
  • Industrial

Standards and Certifications

  • None specified
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Properties

Film Width 50 mm (2 in)
Roll Length 75 m (250 ft)
Material Waxes and polyolefins
Color Natural
Reviews

FAQs

When should I use sealing film instead of caps or lids?

Sealing film is ideal for containers that lack compatible lids or for flexible sealing across various vessel shapes. It is especially useful for temporary sealing, preventing evaporation, or protecting samples during short-term storage. Rigid caps may be better for long-term or transport-intensive applications.

How effective is this film at preventing evaporation and contamination?

The film forms a tight, conforming seal that helps minimize moisture loss and reduces exposure to airborne contaminants. It performs well in typical lab conditions for short- to medium-term use. However, it is not intended to replace airtight systems for highly sensitive or long-term storage requirements.

Can this film be used with irregular or non-standard container shapes?

Yes, its high stretchability allows it to conform to a wide range of container shapes, including flasks, beakers, and test tubes. This flexibility makes it particularly useful in labs with varied glassware, where standard lids or closures may not provide a secure fit.

Are there any limitations when using this sealing film with chemicals?

While resistant to many common lab substances, including acids and alkalis, it may not be suitable for prolonged exposure to aggressive solvents or highly reactive chemicals. Users should verify compatibility for specific applications, especially when working with substances that could degrade flexible materials over time.

What are the best practices for applying and storing the film?

Stretch the film evenly over the container opening to create a secure seal without tearing. Avoid overhandling the surface that will contact the container to maintain cleanliness. Store the roll in a cool, dry place away from direct sunlight to preserve its flexibility and sealing performance.