5-5 Professional Advice
If the glass surface on the inner surface side of the front sash is corroded and cloudy instead of simply being stained, corrosion due to hydrofluoric acid may be considered.
Because glass is a transparent material resistant to a wide range of chemicals, tempered glass is widely used for the sash of fume hoods.
Glass is affected by hydrofluoric acid, so if hydrofluoric acid is used inside the fume hood and left inside as it is, the surface will become cloudy and will not return to its original form.
If the use of hydrofluoric acid is known in advance, a protective sheet can be attached to the glass surface. A transparent resin material can also be used instead of glass.
5-5 Advice for
Initial support/correspondence
Depending on the manufacturer, replacing the front sash can be possible depending on manufacturer.
If replacement is necessary, consult with the fume food maker through the laboratory manager or facility administrator.
If the use of hydrofluoric acid is known in advance, a protective sheet can be attached to the glass surface. A transparent resin material can also be used instead of glass.
