Category: Coatings - mineral surfaces
                              Description: 
                              Exterior Surface Hardening and Protective Clear Coat
Typical Use: 
                              Specifically designed for protecting and preserving decorative and integrally colored concrete and masonry surfaces… perfect for protecting exposed aggregate, concrete, brick and stone pavers.
Apparent use of Nanotechnology: nano lithium
                              Reason for Inclusion: 
                              “This lithium-based solution is VOC compliant and easy to apply.” -Retrieved 8/30/23 from http://convergent-group.com/product/pentra-guard-ext/
"Pentra-Guard™ (EXT) is a is a clear 'Micro Film Forming Hybrid Inorganic / Organic Nano Lithium™' that hardens, seals and protects against moisture damage and enhances the natural color of exposed aggregate, brick, slate, stone and stamped concrete." (Information no longer available as of 8/30/23)
                                   Company: 
                                   Convergent Group S.A.
                                   
                              
                              Trade: Concrete/Cement Masons
                              Safety Data Sheet (SDS): 
                                                                                     unable to locate SDS online
 
                              