Description
NEW Prolene Window Covers for your Thermo Scientific Niton XL5e
This Prolene measurement window is the front lens for the Thermo Scientific Niton XL5e handheld XRF analyzer, engineered to protect the detector and X-ray tube while preserving analytical accuracy across metals, mining, soil, and plastics applications. As a thin-film XRF screen, Prolene allows light elements to pass through cleanly, so a fresh window is critical for maintaining low-Z detection sensitivity.
Over time, everyday use in the field or on the shop floor will scratch, puncture, or contaminate your current window — when that happens, this (Thermo Part Number 447-30991) gives you fast, reliable replacements so your Niton XL5e stays in service. Compatible with the Niton XL5, Niton XL5 Plus, and Niton XL5e.
Function and Purpose
The measurement window forms the primary interface between the sample and the analyzer detector. It is engineered to:
- Protect internal detector components from puncture and contamination
- Maintain proper X-ray transmission for accurate elemental detection
- Support low-energy X-ray analysis required for light elements such as Mg, Al, and Si
A damaged or contaminated window can negatively affect detection limits, precision, and repeatability, particularly when operating the XL5e in LMQS, mining, soil, or plastics modes.
When to Replace the XL5e Measurement Window
Replacement is recommended if you observe:
- Visible holes, tears, or stretching
- Surface contamination that cannot be safely cleaned
- Reduced analytical performance or unstable readings
- Damage caused by sharp samples or rough surfaces
Routine window inspection is especially important when analyzing scrap metal, soil, rock, or irregular samples.
Related XL5e Parts & Accessories
This Prolene measurement window is designed to be used with the XL5e window bracket / retaining frame, which secures the window in place and ensures proper detector alignment. Thermo Scientific Niton XL5e Measurement Window Bracket (sold separately)
What’s Included
- Pack of 10 or 25 Prolene measurement windows based on your selection
Frequently Asked Questions (FAQ)
What does the measurement window do on a handheld XRF analyzer?
The measurement window protects the detector while allowing X-rays to pass between the sample and the analyzer. It is essential for accurate elemental analysis and detector safety.
Does a damaged window affect XRF results?
Yes. Tears, pinholes, or contamination can reduce X-ray transmission, increase noise, and negatively impact detection limits—especially for light elements.
Is this window compatible with other Niton models?
Yes, but only with the Niton XL5 and Niton XL5 Plus handheld XRF analyzers. This Prolene measurement window is designed specifically for the Niton XL5 platform and is not compatible with the XLi, XLt, XLp, XL2, or XL3t analyzers.
Do I need the window bracket as well?
Yes. The window must be secured using the XL5e measurement window bracket.
Check out our Thermo Scientific NitonXL5e collection for more products.