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 The Wisconsin Photoreactor Platform is for use by trained chemists.
 
 WPP apparatuses utilize high-intensity light emitting diodes (LED) that can cause eye damage if proper safety precautions are not observed. 
-Light-filtering safety glasses should be worn whenever a WPP apparatus photon source is powered.
-Care must be taken to use safety glasses protective against the specific emission wavelengths of a photon source.
+A Light-blocking shield should be utilized whenever operating a WPP apparatus.
+Care must be taken to ensure the light-blocking shield employed adequately blocks light emitted by a WPP photon source from directly reaching a user.
+Use of light-filtering safety glasses alongside a light-blocking shield can provide additional protection.
 
 ## Fabrication and Operation Instructions
 
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 ## Enclosure
 
-The WPP is designed around a mechanically robust 3D printed enclosure.
+The WPP is designed around a mechanically robust and simple 3D printed enclosure.
 Every WPP device has the same base, see directory `photoreactor-base`.
 WPP reaction modules are meant to be switched based on the reaction vessel used.
 See directory `photoreactor-reaction-modules` for our growing collection of reaction modules for common vessel types.
+For safe WPP device operation, a light blocking shield is recommended. 
+See directory `photoreactor-light-shield`, for a 3D-printable light-blocking cover for WPP devices.
 
 ## Electronics