The flaw on the glass surface is Frictive Damage, usually caused by glass to glass or metal to glass contact. X-ray analysis shows this to be caused by metal to glass contact. Our analysis allows us to identify the exact metal and therefore the source of the damage allowing corrective actions.

Actually it is not a defect, it is a photo taken of silica sand, which is the fundamental building block of the raw materials in the manufacturing of soda lime silica glass. Silica sand is the network forming oxide in glass. A network is a chemical compound in which the atoms are bonded in a continuous structure throughout the material.

Blister in glass containing a very high level of SO2 due to reboil in the lower temperature zones of a furnace. The solubility of SO2 in the glass melt drastically decreases with an increase of the glass temperature. This leads to a deposition of SO2 in the blister.

Flakes that have peeled away from an inside surface of a container as a result of the glass surface having been depleted of sodium and calcium due to a chemical reaction with the liquid product. The flakes are primarily silica approximately 2 microns in thickness and have been magnified 80 times.