Microppose Laboratory Poly Film (1.25" x 280 ft)
Microppose Laboratory Poly Film (1.25" x 280 ft) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Description
Description
Microppose Laboratory Poly Film is a stretchy, scissor-free alternative to Parafilm for sealing petri dishes: it pulls cleanly off the roll, stretches around the plate and tears by hand with no tools.
Pull a length, tear it by hand, and stretch it around the rim. The film clings to itself and locks moisture in without bonding your dishes together. 1.25 in × 280 ft, enough for hundreds of 90 mm plates.
- 1.25"Width (32 mm)
- 280 ftPer roll
- No toolsTears by hand
- ElasticStretches to seal
- Non-stickStacks cleanly
Why growers switch to Microppose poly film
Pull a length and snap it off. No scissors in the flow hood means one less thing to sterilize and one less thing to reach for while a plate is open.
This is an elastic poly film, not a wax-based film. It stretches around the seam, flexes with temperature swings, and holds up to refrigeration and handling without splitting.
Sealed plates don't glue themselves together in the fridge or incubator. Pull one off the stack without peeling the seal off its neighbor.
How to wrap a plate the right way
The stretch is what makes this film seal. Lay it on loose and it won't cling; pull it taut as you wrap and it locks down.
1Pull about 8 inches
Draw off a length a little longer than the plate's circumference, about 8 in for a 90 mm dish, and tear it by hand.
2Anchor and stretch
Press one end onto the seam between lid and base, then pull the film taut as you wrap.
3Wrap twice, overlap
Go around twice with the film stretched, keeping the seam centered. Overlap the end onto itself and press to lock it.
4Stack and store
Stack sealed plates in the incubator or fridge. They won't bond, and the seal keeps the agar from drying out for weeks.
How long does a roll last? One roll typically lasts months for active hobbyists and weeks for working production labs.
Clear film, full view
Colony visible through the sealed lid
The film is crystal clear, so you can inspect the whole agar surface for growth or contamination without breaking the seal. Sealed plates in the fridge keep for months without the agar shrinking from the edge, and the same roll wraps jar lids, tubes, and anything else that needs a flexible secondary seal. One 280 ft roll lasts months for a hobbyist and weeks for a production lab.
- 280 ft = hundreds of plates
- Fridge-safe, won't split cold
- Works on jars and tubes too
This is an elastic stretch film, not a wax-based film like Parafilm. It seals by tension and self-cling, not by softening onto the plastic.
That's why it tears by hand and doesn't bond plates, and why you need to stretch it as you wrap, not lay it on loose.
Microppose Poly Film vs. Parafilm
Most growers know Parafilm as the standard for sealing plates. Here's how Microppose Poly Film compares in day-to-day use:
| Feature | Microppose Poly Film | Traditional Parafilm |
|---|---|---|
| Cutting | Tears cleanly by hand — no scissors | Typically requires scissors to cut |
| Stacking | Doesn't bond plates when stacked | Can bond plates together if stacked too tightly |
| Elasticity | Highly elastic; stretches easily over the rim | Less elastic; more prone to tearing during application |
| Durability | Stays crack-resistant with daily use | Can crack or split with handling |
| Cost | Lower cost per foot for high-volume work | Higher per-foot cost in long rolls |
Where mycologists use it
- Sealing inoculated plates after transfer to prevent contamination during incubation.
- Long-term plate storage in the refrigerator without the agar drying out.
- Stock culture preservation — sealing master plates that get pulled out repeatedly for transfers.
- Transport — sealing colonized plates for shipment or moving between work areas.
- Small vessels — wrapping jar lids or other culture vessels where a flexible secondary seal helps.
What's included
- One roll of Microppose Laboratory Poly Film, 1.25" (32 mm) x 280 ft
Specifications
| Specification | Detail |
|---|---|
| Manufacturer | Microppose |
| Width | 1.25 inches (32 mm) |
| Length | 280 feet per roll |
| Material | Elastic poly film |
| Application | Sealing petri dishes and culture vessels |
| Tools required | None — tears cleanly by hand |
Build out the agar workflow
Poly FilmThis product
Sterile Petri Dishes20-pack sleeve
Malt Extract Agar Powder200 g, 200+ plates
Self-Healing Injection Ports50-pack
| Poly Film | Petri Dishes | Agar Powder | Injection Ports | |
|---|---|---|---|---|
| Use it for | Sealing poured plates | Pouring plates | Making agar | Jar lids & bags |
| Quantity | 1.25 in × 280 ft | 20 dishes | 200 g, 200+ plates | 50 ports |
| Step | After transfer | Before pouring | Before pouring | Inoculating jars |
| Pairs with | Any 90–100 mm dish | Any agar | These dishes | Jars and bags |
Pairs well withPre-sterilized agar plates and sterile disposable scalpels. New to agar? Read our 2026 guide to using agar plates.
FAQ
Is this a Parafilm alternative?
Yes. It seals petri dishes like Parafilm but tears by hand, stretches more easily and doesn't bond plates together when stacked.
Do I need scissors?
No. The film tears cleanly by hand.
Why won't it seal for me?
Almost always because it was laid on loose. This is a stretch film: pull it taut as you wrap so it thins and clings to itself. Two stretched wraps with the end overlapped and pressed down will hold.
How big is the roll?
Each roll is 1.25 inches (32 mm) wide and 280 feet long, enough for hundreds of plates.
How long will a roll last?
One roll typically lasts months for active hobbyists and weeks for working production labs.
Can I refrigerate sealed plates?
Yes. The film holds up to refrigeration, stacking and repeated handling without splitting, and helps keep agar from drying out in long-term storage.
Our Growing Experts Recommend
Products our growers commonly use with this item
