Didymium Glass absorbs the bright yellow sodium flare (589 NM) which occurs when heating glass in the torch flame. They allow safe viewing of glass as it is worked in the flame. For the beginning lampworker using Mapp gas or propane torches with soft, soda-lime glass. May also be used for periodic viewing of fusing kiln projects. This brand is not recommended for high pressure torch flames on hard glass, pyrex or quartz.
Dual purpose safety glasses for the hot glass worker. Lens surfaces are 24K Gold coated to reflect against radiant energy such as what is emitted from an open furnace or glory hole. Didymium lenses are made of scratch resistant polycarbonate. Frames have side shields for peripheral protection. The lenses have a darker blue color under the gold surface which passes less light. (for small furnace or Glory Hole exposure).
