Due to the tempering process, heat-treated
glass can have minuscule fragments of glass (often referred to as 'glass
fines') deposited on the surface. These are harmless deposits that don't
affect strength or aesthetics, but can be dislodged if inappropriate glass
cleaning is employed. Many window cleaners try to use metal scrapers and
long razor blades to clean glass which result in dislodging of the glass fines
and then scratching the glass surface. Note that RAZOR BLADES AND METAL
SCRAPERS OF ANY SORT ARE NOT RECOMMENDED CLEANING TOOLS by Trulite nor the
glass industry. For more information see Trulite Technical Bulletin
HT-004.
