High-accuracy solar absorptance, reflectance, and transmittance measurements per ASTM E903
Surface Optics specializes in providing ASTM E903-compliant testing services to determine the solar reflectance and transmittance properties of materials. Our laboratory is equipped with advanced instrumentation and staffed by experienced professionals dedicated to delivering precise and reliable results for your solar energy, space, and material science needs.
What is ASTM E903?
ASTM E903-20 is the standard practice for performing spectral near normal-hemispherical reflectance (or transmittance) measurements over the spectral range 300 to 2500 nm with an integrating sphere spectrophotometer. The solar transmittance, reflectance, or absorptance is then obtained by calculating a weighted average with a selected solar spectral irradiance function.
Instrumentation
- SOC410-Solar Reflectometer: Manufactured by Surface Optics Corporation, the 410-Solar measures total reflectance at seven sub-bands in the 300-2500 nm spectral regions.
- Cary 5000 UV-Vis-NIR Spectrophotometer: Manufactured by Agilent, the Cary 5000 UV-Vis-NIR spectrophotometer is a high-performance UV-Vis and NIR spectrophotometer with superb photometric performance in the 175–3300 nm range.
Why Choose Surface Optics
Expertise and Experience
Our lab has been providing optical property measurements for over 45 years, and our team of skilled professionals has extensive experience in ASTM E903 testing. We provide expert guidance and consultation to help you interpret test results and apply them effectively in your projects.
Commitment to Quality
Surface Optics is committed to delivering the highest quality testing services. Our laboratory follows strict quality control procedures to ensure the accuracy and reliability of our results.
Fast Turnaround and Competitive Pricing
We understand the importance of timely results in research and development projects. Our efficient testing processes ensure fast turnaround times and competitive pricing.