M PM999 All-Purpose Laboratory Film, 4" x 250' on 1" Core

The familiar and very useful product (home uses too!) arrived quickly and in good condition.

Parafilm is commonly used in labs to tightly close and seal vials, bottles, jars, etc. containing liquids or solids. I use it often to seal partially used glue containers. It stretches and conforms to the shape of the tube or bottle and forms a good seal. It can be wrapped around multiple times and it sticks to itself very well because of stretching. For this reason it can stick better than kitchen plastic wrap, and it's also chemically relatively inert and resistant to many chemicals, including strong acids and bases (for some time. ) It seems expensive, but the package is heavy and it last for a long time if used for its purpose. It's generally not used for very large openings, like food containers or trays. The best way of removing the paper backing is to slightly stretch the film until the paper tears.

If you've ever wondered what CostCo uses to make their organic bananas last longer, this is it. Sometime in the past couple of years, CostCo stopped wrapping their regular bananas with this stuff, and as a result they ripen faster - much faster. Applying this tape over the exposed stem will limit oxygen being able to get in allowing the bananas to generate ethylene gas and ripen faster. So, if you'd like to preserve your 'conventional' bananas longer or slow their ripening, this is the tape for that purpose.

I use this to seal the caps on moisture-sensitive casting resins and the like. It's the by far the best solution I've found to keeping humidity out and extending their life.

Seal agar plates great!

Seals & stretches great; however, it tears easily if not careful. Used to seal bottles.

The classic, user-friendly, flexible solution for the lab (or many projects at home). I have used Parafilm-M for years and happy to say, it is one of my most favorite, multi-functional products of all time. Highly recommend it for lab and for other uses around the house. I have heard the term "coat hanger and duct tape" for years...that term needs to be restated as "coat hanger, duct tape, and Parafilm!"

I like the 4" wide roll since it is wide enough to get around standard 100 x 15mm petri dish and you only have to cut a thin (about 1/4") piece off. If you cut a bigger piece (about 3/4") you can get it around a glass petri dish. I imagine my roll will last a really long time.

this satisfies my needs and then some not some cheap imitaion sit is make in the USA, Bemis , is not some knock off From a foreign country making a cheap product

llego en tiempo, buen producto

Works as advertised. This is the perfect material to preserve expensive bottles of unopened scotch. Acts as a secondary airtight barrier incase of cork malfunction.

Qualité labo à moindre coût, livraison très rapide.

El producto es de buena calidad lo que deja mucho que desear es el empacado del producto llega muy maltratado.