Optical Materials

Short Description

SphereOptics diffuse reflectance standards are made from our proprietary Zenith Polymer reflectance material. This highly reflecting, PTFE-based material is resistant to heat, humidity and exposure to high levels of radiation, making it ideal for use as reflectance standards. Those are available in two sizes of 50 mm and 30 mm diameter with reflectance values of 99 %, 80 %, 60 %, 50 %, 25 %, 10 %, 5 % and 2.5 %. Standards are sold individually or in sets of two, four or eight standards with a free choice of reflectance values. Each standard is packaged in a durable holder with a protective cover and comes in a storage box.

Properties

• Non-polar, insulator, hydrophobic
• Chemically inert, exception: reacts with organic Lithium and Sodium compounds
• Usable temperature range: – 50 °C to 250 °C
• Usable humidity range: 5 % to 95 %, but water absorption bands will be visible
• Standard pore sizes 1 – 20 μm, average 6 μm, Standard pore sizes 1 – 20 μm, average 6 μm