Ocean Optics WS-1 - Manual

A367-DS-1-01-201107 1
WS-1 Reflectance Standard
Operating Instructions
The WS-1 Diffuse Reflectance Standard is for use in performing diffuse reflectance measurements,
especially color analysis. The WS-1 is available in the following four models:
WS1 Diffuse Reflectance Standard
Made of PTFE, a diffuse white plastic that provides a Lambertian reference
surface for reflectance experiments. The WS-1 comes in an anodized
aluminum housing, and is hydrophobic, chemically inert and very stable,
even in deep-ultraviolet applications. It is >98% reflective from 250-
1500 nm and >95% reflective from 250-2200 nm.
The reflective area of the WS-1 has a 32 mm OD. The diffusing material is
encased in a small receptacle with screw-on top. The material is almost
uniformly reflective (>95%) by wavelength across the entire range of 250-
2000 nm.
WS-1-SL White Reflectance Standard
The WS-1-SL is a diffuse reflectance standard from Labsphere and is made
from their patented diffuse reflectance material, Spectralon. Spectralon is
hydrophobic and is thermally stable to 350 °C. The durable material
provides highly accurate, reproducible data. Unlike all the other PTFE-
based standards on this page, the WS-1-SL often can be smoothed, flattened
and cleaned if nicked or soiled.
WS-1-SS White Standard with Stainless Steel Housing
The WS-1-SS comes in a stainless steel housing and has the same properties
as the WS-1. In addition, the surface of the WS-1-SS is slightly recessed to
allow the RPH-1 Reflection Probe Holder to sit on the standard without
coming in direct contact with the standard’s surface.
WS-3-GEM White Standard
Conceived for use in colorimetric applications involving diamonds and
other gems, the WS-3-GEM White Reference Tile consists of a diffuse
PTFE-based material, shaped to form a holder within its stainless steel
receptacle. Because of its concave shape, the WS-3-GEM becomes an
integrating sphere when illuminated.
The WS-3-GEM has >98% reflectivity from 400-1500 nm and >95%
reflectivity from 250-2000 nm. Like the WS-1, the WS-3-GEM's
reflectance material is hydrophobic, chemically inert and very stable, even
in deep-UV applications.