Microporous Polypropylene Film
Microporous Film is a gas permeable thin membrane used in conjunction with Series 1500 XRF Sample Cups to establish pressure equalization in inert gas and vacuum environmental analytical conditions.
When Microporous Film is attached to the flanged open end of a Series 1500 XRF Sample Cup, the tortuous pore channels permit gaseous elements to penetrate. The pore size prohibits crystalline particles to pass. Any entrapped gas or air within the sealed sample cup is evacuated leaving the thin-film sample support substance on the opposite end flat and free of convolutions or distension attributed to pressure differentials.

Fast · Easy-To-Use · No Waste
- Microporous Film In Pre-cut Circles
- 100 Circles/Package Corresponds to 100 Sample Cups/Package
Microporous film maintains pressure equalization in inert gas and vacuum environments
Typical Properties
| Properties | Typical Values |
|---|---|
| Porosity, % | 55 |
| Pore Size, mµ xmµ | 0.21 x 0.05 |
| Thickness, mµ (inches; mm) | 25 (0.001"; 0.0254mm) |
| Softening Temperature, oC | Approx. 155 |
| Melting Temperature, oC | 165 |
Specifications And Ordering Information
Microporous Film in Continuous Rolls and Pre-Cut Circles
| CATALOG NUMBER | DESCRIPTION | Packaging |
|---|---|---|
| 325 | Microporous Film, Continuous Roll | 2.5" wide x 200" long (6.4cm x 5.1m) |
| 325C | Microporous Film, Pre-Cut Circles | 2.5" (76mm) diameter; 100 circles/Pkg |
Supplied in unserrated edge boxes.



