Corning® VYCOR® Glassware

VYCOR glass has several exceptional properties. Since it is 96% silica, it is similar to fused quartz in its thermal properties. It may be used at much higher temperatures than PYREX Code No. 7740 borosilicate glass and will withstand considerably more thermal shock. VYCOR products can be used continuously at 900°C and intermittently to 1200°C (see Table 1). Containing only five elements, it is used for very precise analytical work.

VYCOR Crucibles are for analytical work where ashing samples is required. Lids are useful for covering platinum or opaque crucibles		VYCOR Beakers are for applications needing high thermal and chemical resistance and stability with acids or mild alkali.		VYCOR Evaporating Dishes are useful for ashing materials, particularly in electric furnaces.

VYCOR glass is formed as a borosilicate type glass. It is then subjected to a chemical treatment that removes most of the elements in the glass except silica (SiO2). Glass is then reheated to eliminate the microscopic holes caused by the chemical treatment. Only quartz has higher silica content.

Table 1. Comparison of VYCOR 7913 glass with other Corning PYREX formulations

a. For normal service no breakage from excessive thermal shock is assumed. Extreme service glass will be very vulnerable to thermal shock. Recommendations in this range are based on mechanical stability considerations only. Tests should be made before adopting final designs. These data are approximate only.

Learn more about VYCOR products in our Product Catalog

• VYCOR Crucibles
• VYCOR Beakers
• VYCOR Evaporating Dishes
• VYCOR Tubing

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