Moxtek® sealed proportional counter windows allow high transmission of low-energy x-rays (including Boron). These windows are ideal for sealed proportional counter applications that require analysis of light elements. X-ray Windows Sealed Proportional Counter Windows Features Benefits - Sealed - Ultra-thin film - Mechanically strong - Charge dissipation - Light rejection - No gas flow - High transmission of low energy - Withstand partial pressures and cycling - Reduces unwanted noise on detector sensor - Reduces unwanted peaks on detector sensor Applications Benchtop WDXRF - Environmental - RoHS/ WEEE Floor standing WDXRF Portable WDXRF Mechanical Strength Window Composition Temperature Performance Charge Dissipation and Light Rejection Moxtek proportional counter windows are composed of an ultra-thin layer of Moxtek polymer, a resistive DuraCoat®, a charge dissipative aluminum coating, and a strong support structure composed of silicon. Moxtek proportional counter windows are supported by a rigid silicon grid. This patented window design enables the window to withstand over 1.2 atmosphere of differential pressure. This window can withstand over 100,000 cycles at that same differential pressure without degradation in window performance. Pressure Limits: 1.2 atm frontal pressure, 0.3 atm backside pressure. Moxtek proportional counter windows are capable of exposure to 85° C at a differential pressure of 1 atm. Moxtek proportional counter windows are coated with aluminum for charge dissipation and light rejection. A custom thickness can be requested. WIN-DATA-1005, Rev A Subject to technical change without notice MOXTEK®

452 West 1260 North / Orem, UT 84057 Phone 801.225.0930 / Fax 801.221.1121 www.moxtek.com Transmission Performance WIN-DATA-1005, Rev A Subject to technical change without notice Mounting Cleaning Chemical Resistance Vacuum Tightness Active Area Moxtek sealed proportional counter windows have a maximum open area of 600 mm2. The grid open area is generally 76%. Two options are currently available suited to the sequential and simultaneous elemental analysis: • Simultaneous: Active area = 5 mm x 25 mm • Sequential: Active area = 20 mm x 30 mm Contact Moxtek about custom dimensions and mounts. Every...