Reflectance Standards

 

  • Ideal for Reflectance Measurements
  • Wide Range Detection from 250 to 2400 nm
  • Different Reflectivities for Diffuse Measurements
  • Fused Silica for Specular Measurements
    Relative reflectance measurements calculate the proportional amount of reflected light from a sample against the amount of reflected light from a standard, which is assumed to have a reflectance of 100 %. For diffuse reflectance measurements, Sarspec offers a set of standards made of optical polytetrafluoroethylene (PTFE) with 98%, 50% and 10% of reflectivity from 250 to 2500 nm.

    These standards are hydrophobic and chemically inert, therefore can be cleaned. Furthermore, these standards also offer a long term stability, even in UV measurements. For specular reflectance measurements, Sarspec offers a fused silica substrate coated with Al-MgF2 for high specular reflectivity from 250 to 2500 nm.

    Reflectance Standards Technical Data

    Description
    Wavelengh Range
    Cell Material
    Support Material
    Thickness
    Maximum Temperature
    Diffuse Reflectance
    250-2500 nm
    Optical PTFE
    Black Anodized Aluminium
    10 mm
    260 ºC
    Specular Reflectance
    250-2500 nm
    Fused Silica/Al-MgF2
    Black Anodized Aluminium
    12 mm
    80 ºC

    Reflectance Standards Ordering Information

    Part-Number
    DRSTD98
    DRSTD50
    DRSTD10
    SRSTD
    Description
    Diffuse Reflectance Standard, PTFE, 98% Reflectance
    Diffuse Reflectance Standard, PTFE, 50% Reflectance
    Diffuse Reflectance Standard, PTFE, 10% Reflectance
    Specular Reflectance Standard